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1b9aef6d2df0c04de14b4bc1f741b8919bf87e3e | {
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} | null | https://www.semanticscholar.org/paper/1b9aef6d2df0c04de14b4bc1f741b8919bf87e3e | Synthesis and electrochemical properties of Li_4Ti_5O_(12) prepared by high-energy ball milling method | High-energy ball milling was applied for the synthesis of spinel Li4Ti5O12 in this study.The crystal structure,microstructure and electrochemical properties of the obtained samples were characterized by XRD,SEM,galvanostatically charge-discharge and cyclic voltammetry experiments.The effects of the calcining temperature on the phase structure were studied to optimize process.The results demonstrate that the Li4Ti5O12 powders calcined at 800 ℃ for 7 h comprise of crystallites with the particle size about 200 nm,revealing high dispersivity almost without any agglomerates,and exhibiting an excellent electrochemical performance.Its discharge capacities at 0.5 and 1 rates are 180.3 mAh/g and 160.1 mAh/g,respectively.After 100 cycles,fairly stable cycling performance was achieved without obvious capacity fade.The charge and discharge results of samples demonstrate that the method is appropriate for preparing Li4Ti5O12 with high electrochemical performance. | 2,013 | 0 | null | [
{
"authorId": "9273919",
"name": "Wang Da"
}
] | null | null | 638,144 |
|
1ba087a195b0ca2806716cfc53f1633d12ec9fff | {
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} | null | https://www.semanticscholar.org/paper/1ba087a195b0ca2806716cfc53f1633d12ec9fff | Composite nanosheets of graphene and boron nitride for lubrication application | This study has investigated the synthesis of graphene and boron nitride composite nanosheets and their lubrication application. Large-scale production of graphene and boron nitride composite nanosheets has been achieved using a high-energy ball milling process. The composite nanosheets exhibit better wear resistance and friction reduction properties than the homogeneous nanosheets. | 2,018 | 0 | null | [
{
"authorId": "47909115",
"name": "Yuchen Liu"
}
] | null | null | 638,146 |
|
1bb90742964f5c7f4412f6697ecbbcd02932d78e | {
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"DOI": "10.1515/ntrev-2020-0074",
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} | null | https://www.semanticscholar.org/paper/1bb90742964f5c7f4412f6697ecbbcd02932d78e | Study on influencing factors of photocatalytic performance of CdS/TiO2 nanocomposite concrete | Abstract In this study, a high-energy ball mill was used to composite nano-TiO2 and CdS, and three kinds of nanocomposite photocatalysts TiO2, CdS/TiO2-R400, and CdS/TiO2-R600 were prepared, which can respond to visible light. The photocatalytic concrete test block was prepared by mixing the nanocomposite photocatalyst and other masses with cement by incorporation method. To study the effect of the photocatalyst content on the photocatalytic performance of nanoconcrete, a total of four catalyst contents (0, 2%, 5%, and 8%) were set. The effects of high-temperature treatment (400°C) and different light sources (ultraviolet and visible light) on photocatalytic efficiency were also considered. The results show that the catalytic efficiency of CdS/TiO2-R400 under two light sources is higher than that of the other two photocatalysts. Compared to ultraviolet light sources, the photocatalytic efficiency of CdS/TiO2 nanocomposite concrete under visible light is lower, and the efficiency is below 9%. The optimal amounts of CdS/TiO2 nanocomposite photocatalyst under ultraviolet and visible light are 2% and 5%, respectively. The high-temperature treatment can improve the photocatalytic performance of CdS/TiO2 nanocomposite photocatalyst by 2% to 3%. Graphical abstract | 2,020 | 8 | {
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"url": "https://www.degruyter.com/downloadpdf/journals/ntrev/9/1/article-p1160.pdf"
} | [
{
"authorId": "50381210",
"name": "K. He"
},
{
"authorId": "2144836399",
"name": "Yu Chen"
},
{
"authorId": "49566748",
"name": "Meng Mei"
}
] | https://www.degruyter.com/downloadpdf/journals/ntrev/9/1/article-p1160.pdf | www.degruyter.com | 638,150 |
|
1bbeab33246f78aacd62af68028adf86314e33e1 | {
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"DOI": "10.12677/MS.2017.72031",
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} | null | https://www.semanticscholar.org/paper/1bbeab33246f78aacd62af68028adf86314e33e1 | 纳米Mg-Ni合金吸/放氢过程的热力学性能研究 Hydrogen Storage Properties of Nanocrystalline Mg2Ni Based Alloys Prepared by Ball-Milling | 通过合理改善贮氢材料的结构和表面性能而使新型纳米氢化物材料具有显著的吸氢特性。用机械合金化法制备了Mg-Ni合金粉末，用XRD及TEM等分析表征了球磨过程中的相和微观结构变化，测定了纳米Mg-Ni合金的热力学性能。结果表明，机械合金化能较好地制备Mg-Ni合金粉末，Mg-Ni合金粉末的尺寸在10 nm~20 nm之间；P-C等温线存在明显的坪曲线，坪宽较大。纳米Mg2Ni合金在523 K的温度下即能吸氢。可逆吸氢容量可达3.5 wt%。总之，纳米Mg-Ni合金有较好的贮氢性能，具有很好的工程应用价值。 Nanocrystalline hydrides are new class of material in which outstanding hydrogen sorption may be obtained by proper engineering of the microstructure and surface. In present work, nanocrystalline Mg2Ni (wt.%) alloy powders with grain size of about 10~20 nm were prepared by high- energy ball milling, and its phase, crystal structure and hydrogen storage properties were investigated via X-ray diffraction analysis (XRD), Transmission electron microscopy (TEM) and Pressure- composition isotherms. Results on the hydrogen storage characteristics of Mg2Ni are presented. Nanocrystalline Mg2Ni can readily absorb hydrogen at 523 K. The reversible hydrogen capacity is up to 3.5 wt.%. The nanocrystalline Mg2Ni alloy is a promising hydrogen storage material. | 2,017 | 0 | null | [
{
"authorId": "92718709",
"name": "熊义富"
},
{
"authorId": "94293969",
"name": "把静文"
},
{
"authorId": "93487251",
"name": "敬文勇"
}
] | null | null | 638,151 |
|
1bc63a0f1d308e354eebd49e6717d483c126d64c | {
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"DOI": "10.1134/S1063783416080199",
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} | null | https://www.semanticscholar.org/paper/1bc63a0f1d308e354eebd49e6717d483c126d64c | Effect of small particle sizes on the measured density of nanocrystalline powders of nonstoichiometric tantalum carbide TaCy | null | 2,016 | 5 | null | [
{
"authorId": "11174369",
"name": "A. Kurlov"
},
{
"authorId": "145516971",
"name": "A. Gusev"
}
] | null | null | 638,152 |
|
1bc9433ae8fad51c7c67a80bd50ded8d255bb455 | {
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} | null | https://www.semanticscholar.org/paper/1bc9433ae8fad51c7c67a80bd50ded8d255bb455 | Preparation method for lithium-ion battery cathode material with high initial coulomb efficiency | The invention discloses a preparation method for a lithium-ion battery cathode material with a high initial coulomb efficiency. The preparation method comprises the following steps of: (1) mixing LiH with SiO to obtain a mixture; (2) heating the mixture to a predetermined temperature in a vacuum or an inert atmosphere, and performing heat-insulating hydrogen desorption to obtain a hydrogen desorption product; and (3) performing high-energy ball milling on the hydrogen desorption product to obtain the lithium-ion battery cathode material. According to the preparation method provided by the invention, a Li-Si-O compound is formed in the lithium-ion battery cathode material via partial chemical pre-embedment of lithium, so that the initial coulomb efficiency of the lithium-ion battery cathode material is increased to be greater than 90%; and the preparation method is simple, effective, economic and practical. | 2,013 | 0 | null | [
{
"authorId": "52464928",
"name": "刘永锋"
},
{
"authorId": "2095252283",
"name": "马瑞军"
},
{
"authorId": "92111492",
"name": "潘洪革"
},
{
"authorId": "2093929882",
"name": "高明霞"
}
] | null | null | 638,153 |
|
1bd399a99608cc07a04313880ec807df3e55bbee | {
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"DOI": "10.1007/S11244-009-9192-6",
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} | null | https://www.semanticscholar.org/paper/1bd399a99608cc07a04313880ec807df3e55bbee | Fe- and Eu-doped TiO2 Photocatalytical Materials Prepared by High Energy Ball Milling | null | 2,009 | 16 | null | [
{
"authorId": "46290931",
"name": "F. Vasiliu"
},
{
"authorId": "50761722",
"name": "L. Diamandescu"
},
{
"authorId": "49056900",
"name": "D. Macovei"
},
{
"authorId": "39628781",
"name": "C. Teodorescu"
},
{
"authorId": "1404038351",
"name": "D. Tǎrǎbǎşanu-Mihaila"
},
{
"authorId": "2329877",
"name": "A. Vlaicu"
},
{
"authorId": "36504522",
"name": "V. Parvulescu"
}
] | null | null | 638,154 |
|
1bd459cc704b649b1f53b2969dc84ec18f4f45ec | {
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} | null | https://www.semanticscholar.org/paper/1bd459cc704b649b1f53b2969dc84ec18f4f45ec | Microstructure and Electrical Properties of Y_2O_3-doped ZnO-Bi_2O_3-based Varistor Ceramics | Y2O3-doped ZnO-Bi2O3-based varistor ceramics were prepared by using high energy ball milling,and the electrical properties and microstructure of the varistor ceramics were studied.With addition of 0~1.00% Y2O3,Y2O3-doped ZnO-based varistor ceramics were prepared with the voltage gradient of 332~597 V/mm,the nonlinear coefficient of 23.6~40.1,and the leakage current of 0.06~0.90 μA.The results show with addition of 0.60% Y2O3,Y2O3-doped ZnO-based varistor ceramics exhibit comparatively ideal comprehensive electrical properties,such as the threshold voltage is 482 V/mm,the nonlinear coefficient is 34.8 and the leakage current is 0.17 μA.As Y2O3 content increases,the grain size decreases.Existence of some Y2O3 at the grain boundaries hinders the movement of the grain boundaries,and some Y2O3 dissolves in Bi2O3 liquid to form the intergranular Bi-rich phase content with Y,thus,Bi2O3 hinders the grain growth. | 2,009 | 1 | null | [
{
"authorId": "2073767151",
"name": "Zhong Qing-dong"
}
] | null | null | 638,155 |
|
1bd4e40f1116594c329afcccff6c711e7acb4a3b | {
"ACL": null,
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"DBLP": null,
"DOI": "10.1142/S0217984916500561",
"MAG": "2238888526",
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} | null | https://www.semanticscholar.org/paper/1bd4e40f1116594c329afcccff6c711e7acb4a3b | Effect of cerium substitution on structural and impedance properties of 0.8Ba0.2(Bi0.5K0.5)TiO3 lead free ceramic system | Cerium-doped 0.8BaTiO3-0.2Bi0.5K0.5TiO3 with composition 0.8Ba0.2(Bi0.5K0.5)Ti1−xCexO3 where x = 0.01, 0.02, 0.03, 0.04, 0.05, 0.06 lead free ceramics were prepared by conventional solid state reaction method followed by high energy ball milling. X-ray diffraction studies confirm the tetragonal structure at room temperature for all the Ce-doped samples. Lattice parameters and density were increasing with increase of Ce doping. Frequency and temperature dependent dielectric studies were carried out and indicate that the dielectric constant and Curie temperature are decreasing with increasing of Ce doping. All the Ce-doped samples exhibiting diffused and dispersive phase transitions with degree of diffuseness ranging from 1.4 to 2 calculated from the modified Curie–Weiss law. Impedance studies confirms the temperature dependent non-Debye kind of relaxation process in the material. From the Cole–Cole plots measured at high temperatures, reveals that the grain effect in the all Ce-doped samples. Impedance analysis studies also support the X-ray diffraction and dielectric studies that occupation of Ce both at A-site and B-site for small values of Ce doping. | 2,016 | 3 | null | [
{
"authorId": "153843189",
"name": "M. Ramesh"
},
{
"authorId": "48849483",
"name": "K. V. Ramesh"
}
] | null | null | 638,156 |
|
1be543c2910c45611496b78a25214818e5373a01 | {
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} | null | https://www.semanticscholar.org/paper/1be543c2910c45611496b78a25214818e5373a01 | Influences of Grain Size and Heat-Treatment on Magnetic Properties and Synthesis of Soft/Hard Magnetic Composite Materials | Sm2Fe17N3/Fe3N/BN composite magnetic material was prepared by means of high-energy ball-milling and vacuum annealing treatment.Solid-state phase transformation and magnetic performance were investigated.The results show that the conditions of the generation of Sm2Fe17N3 and Fe3N are the grain size of Fe comes up to nanometre(D80 nm) and forms Fe(Sm) solid solution.The crystal substance of Sm2Fe17N3/Fe3N/BN in the ball-milling material vacuum annealing at 300 ℃ was increased and coercivity was increased with increasing annealing time.That is magnetic property of the sample has something to do with the degree of crystallinity of Sm2Fe17N3. | 2,012 | 0 | null | [
{
"authorId": "50738190",
"name": "Wang Hai-yan"
}
] | null | null | 638,159 |
|
1bfe00b68482ca11b5bc225573211d250e631eb3 | {
"ACL": null,
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"CorpusId": 137465213,
"DBLP": null,
"DOI": "10.1016/S0921-5093(01)01451-4",
"MAG": "2038592923",
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} | null | https://www.semanticscholar.org/paper/1bfe00b68482ca11b5bc225573211d250e631eb3 | Dense nanocrystalline TiB2–TiC composites formed by field activation from high-energy ball milled reactants | null | 2,002 | 53 | null | [
{
"authorId": "114325833",
"name": "J. W. Lee"
},
{
"authorId": "9198575",
"name": "Z. Munir"
},
{
"authorId": "92522006",
"name": "M. Ohyanagi"
}
] | null | null | 638,162 |
|
1c0c754c238d890f640dcba06c5938dc2d3af553 | {
"ACL": null,
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"DOI": "10.1007/s11665-015-1718-4",
"MAG": "1915485480",
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} | null | https://www.semanticscholar.org/paper/1c0c754c238d890f640dcba06c5938dc2d3af553 | Comparative Studies on Al-Based Composite Powder Reinforced with Nano Garnet and Multi-wall Carbon Nanotubes | null | Journal of materials engineering and performance (Print) | 2,015 | 1 | null | [
{
"authorId": "92755101",
"name": "M. R. Basariya"
},
{
"authorId": "144354454",
"name": "V. Srivastava"
},
{
"authorId": "47577964",
"name": "N. Mukhopadhyay"
}
] | null | null | 638,164 |
1c21eb4111e703ed3697b7b8ea8b5c649bc96cd3 | {
"ACL": null,
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"CorpusId": 55972607,
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"DOI": "10.17159/2411-9717/2016/v116n10a14",
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} | null | https://www.semanticscholar.org/paper/1c21eb4111e703ed3697b7b8ea8b5c649bc96cd3 | Effect of niobium on the solidification structure and properties of hypoeutectic high-chromium white cast irons | involved in a project in which a number of alloys have been identified for grinding media applications. The high-chromium white cast iron (HCWCI) alloys were among the alloys researched for this application. The knowledge acquired from the grinding ball media research has now been extended to mill liners, which have traditionally been made of manganese-, chromiumand chrome-molybdenum steels. The replacement of worn mill liners costs the mining industry a significant amount of money and this has led to a need for continuous research to prolong the life of the liners. During milling operations, liner wear has an adverse effect on the capacity of the mill, the energy efficiency and milling efficiency and finally leads to relining, to replace worn liners. The mill efficiency depends on the charge motion, which in turn is largely influenced by the liner profiles and performance. The choice of a liner requires a holistic approach that examines the compatibility with the mill conditions, the mechanical performance and the cost-effectiveness. The operating conditions in a fine grinding mill require that the liner should be made of highly wearresistant material with some fracture strength such as (HCWCI). HCWCI contains a minimum of 2%C with a chromium content ranging from 15% to 35%. The term ‘white cast iron’ refers to the appearance of a white fractured surface in the material after damage, due to the presence of white cementite. This material has been proven to be effective for applications in aggressive environments where wear and erosion resistance are required. The high wear resistance of HCWCI is attributed to the microstructural constituents such as hard primary and/or eutectic carbides of M7C3 (where M is iron, chromium and other strong carbide formers) and a relatively ductile ferrous matrix (Bedolla-Jacuinde et al., 2005, 2007; Adler and Dogan, 1999; Dogan, Hawk and Laird, 1997; Stevenson and Hutchings, 1995; Radzikowska, 2004). Austenitizing at a temperature above 1100°C leads to the precipitation M7C3 carbides while below 1100°C the precipitation of both M7C3 and M23C6 carbides, which are rich in alloying elements, occurs (Kootsookos and Gates, 2008). The precipitation of secondary carbides lowers the alloy content in the dendritic austenite and thus raises the martensite start temperature, hence the formation of martensite upon cooling (Cetinkaya, 2006). The hardness of M7C3 is in the range of 1200 HV (Stevenson and Hutchings, 1995), which may vary with the composition and the ferrous matrix binds the hard M7C3 carbides and provides the material with certain fracture strength that is vital for handling high impact forces (Bedolla-Jacuinde et al., 2005; Effect of niobium on the solidification structure and properties of hypoeutectic high-chromium white cast irons by M.E. Maja*†, M.G. Maruma*, L.A. Mampuru* and S.J. Moema* | 2,016 | 13 | {
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"url": "http://pdfs.semanticscholar.org/1c21/eb4111e703ed3697b7b8ea8b5c649bc96cd3.pdf"
} | [
{
"authorId": "1390162283",
"name": "M. Maja"
},
{
"authorId": "97956992",
"name": "M. G. Maruma"
},
{
"authorId": "93328474",
"name": "L. A. Mampuru"
},
{
"authorId": "81814281",
"name": "S. Moema"
}
] | http://pdfs.semanticscholar.org/1c21/eb4111e703ed3697b7b8ea8b5c649bc96cd3.pdf | pdfs.semanticscholar.org | 638,166 |
|
1c28eaa88519b2fe4a1f1693d072596878f66128 | {
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} | null | https://www.semanticscholar.org/paper/1c28eaa88519b2fe4a1f1693d072596878f66128 | Preparation of bismuth telluride based thermoelectric nanomaterials via low-energy ball milling and their property characterizations | Robinson, Christopher A., M.S.M.E., Purdue University, May 2015. Preparation of Bismuth Telluride Based Thermoelectric Nanomaterials Via Low-Energy Ball Milling and their Property Characterizations. Major Professor: Xiulin Ruan, School of Mechanical Engineering. Thermoelectric materials are able to convert energy between heat and electricity with no moving parts, making them very appealing for power generation purposes. This is particularly appealing since many forms of energy generation lose energy to waste heat. The Livermore National Laboratory estimates that up to 55% of the energy created in traditional power plants is lost through heat generation [1]. As greenhouse gas emissions become a more important issue, large sources of waste like this will need to be harnessed. Adoption of these materials has been limited due to the cost and efficiency of current technology. Bismuth telluride based alloys have a dimensionless figure of merit, a measure of efficiency, near one at room temperature, which makes it the best current material. In order to compete with other forms of energy generation, this needs to be increased to three or higher [2]. Recently, improvements in performance have come in the form of random nanostructured materials [3]. Bulk bismuth telluride is subjected to particle size reduction via high-energy ball milling in order to scatter phonons between | 2,015 | 1 | null | [
{
"authorId": "2064939800",
"name": "C. A. Robinson"
}
] | null | null | 638,167 |
|
1c30594e33c5ec045cec414bdcdb34c11406d37d | {
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} | null | https://www.semanticscholar.org/paper/1c30594e33c5ec045cec414bdcdb34c11406d37d | CRYSTALLOGRAPHIC AND MAGNETIC PROPERTIES OF METASTABLES AND STABLES NANOCRYSTALLINE | Nanocrystalline iron rich Sm-Fe-Si samples were prepared by high energy ball milling and subsequent annealing. The metastable Sm(Fe,Si)9 alloys having P6/mmm type structure are formed by annealing the sample up to ≅ 800°C. For higher annealing temperatures the rhombohedral Sm2(Fe,Si)17 compounds are gradually formed as result of an atomic ordering process. The Curie temperatures of the 1/9 samples are by ≅ 30 K higher than those of 2/17 compounds having the same silicon content. By carbonation, due to volume effects, the TC values increase in both 1/9 and 2/17 phases, being somewhat higher for 1/9 alloys. The volume dependence of the effective exchange interactions in 1/9 phases can be described by d lnJeff /d lnv = 1.82. The nanocrystalline Sm(Fe,Si)9C samples annealed at 700–800°C have high coercivities, up to μoHc ≅ 1.5 T. | 2,005 | 1 | null | [
{
"authorId": "2104351844",
"name": "Sm-Fe-Si Alloys"
},
{
"authorId": "1412909655",
"name": "C. Djéga-Mariadassou"
},
{
"authorId": "91513931",
"name": "E. Burzo"
},
{
"authorId": "2384511",
"name": "A. Nandra"
},
{
"authorId": "14832520",
"name": "L. Bessais"
}
] | null | null | 638,169 |
|
1c362405af09a731f1d4bed009b8e44783c8563e | {
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"DOI": "10.1080/10426914.2014.912305",
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} | null | https://www.semanticscholar.org/paper/1c362405af09a731f1d4bed009b8e44783c8563e | Consolidated Al/Al2O3 Nanocomposites by Equal Channel Angular Pressing and Hot Extrusion | This work is aimed at producing Al-matrix nanocomposites through the powder metallurgy (PM) process. An initial study on pure aluminum powder was performed to analyze the performance of different PM techniques. In particular, Al powder was refined via high-energy ball milling and consolidated by hot extrusion and equal channel angular pressing. The latter revealed to be a very efficient procedure for powder compaction (high density and hardness of the products) and it was adopted for the production of Al-based composites reinforced with 2% and 5 wt% of Al2O3 nanoparticles. The composites exhibited higher hardness than the pure aluminum sample. | 2,015 | 23 | {
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} | [
{
"authorId": "40685347",
"name": "R. Casati"
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{
"authorId": "2182360",
"name": "M. Vedani"
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] | https://re.public.polimi.it/bitstream/11311/968054/8/Consolidated%20Al-Al2O3%20Nanocomposites%20by%20Equal%20Channel_11311-968054_Casati.pdf | re.public.polimi.it | 638,171 |
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} | https://www.semanticscholar.org/paper/1c44784f5e1a84fcd6b64cc30b2cc3f188b8eaae | Characterization, Formation Mechanism, and Thermodynamics of Nanocrystalline Ni3Si Powder Prepared by Mechanical Alloying | null | Physics of metals and metallography | 2,020 | 1 | null | [
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} | https://www.semanticscholar.org/paper/1c46c241e9bd2ae1395d30e9443d52663bc09016 | Effect of high energy ball milling on spherical metallic powder particulates for additive manufacturing | Abstract Properties, such as morphology, particle size, and hardness affect the ability of a powder to flow and bond to a surface in additive manufacturing (AM) applications. The effects of high energy ball milling on spherical copper and stainless steel powders were evaluated. Morphology of both stainless steel and copper powders, quantifiable by aspect ratio, showed larger changes due to ball-to-powder ratio (BPR, 2:1–1:10) compared to the total milling time (2–60 min). Hardness of copper increased from 53 HV0.01 in the as-received condition to 96 HV0.01 after milling for 60 min with a BPR of 1:1 or 2:1. Hardness of steel increased from 336 HV0.01 in the as-received condition to 523 HV0.01 after milling for 60 min with a BPR of 2:1. Hardness of both powders was insensitive to milling times at low BPR (1:10). At high BPR (2:1), hardness of steel increases after just 2 min of milling, while Cu changed significantly only after 60 min. Hardness was influenced more by BPR than by milling time. It is shown that a broad range of milling parameters exist where metallic powders can be processed with minimal changes to their morphology, while controlling for hardness. | Particulate Science and Technology | 2,021 | 13 | null | [
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"name": "Chanman Park"
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{
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} | null | https://www.semanticscholar.org/paper/1c64f641ce693230f4d4a318b9fe16d3ac7c62fd | ff ect of high-energy ball milling on the electrical properties of NaTaO 3 ceramic | In this work, the effect of high energy milling time on the structural and electrical properties of NaTaO3 (NT) ceramics synthesized using standard solid-state reaction method was investigated. X-ray diffraction studies indicated that the unit cell structure for all samples is orthorhombic (space group: Pnma). FTIR spectra also confirmed the formation of NT without any new phase. The NT ceramics prepared with 10 h milled powder showed the formation of small grain sizes (∼1.2 μm) which is beneficial for dielectric applications in high density integrated devices. The NT ceramics prepared with the 10 h milled powder exhibited superior dielectric properties, i.e. enhancement in ε value (from 290 to 1270) and reduction in tg δ (from 0.59 to 0.23) at 1 kHz compared to the ceramics prepared with the unmilled powder. Impedance analysis indicated the negative temperature coefficient of resistance (NTCR) character with non-Debye type of dielectric relaxation. The correlated barrier hopping model successfully explains the mechanism of charge transport in the present ceramic samples. The values of remnant polarization and coercive field of the poled samples prepared with the unmilled and 10 h milled powders were found to be 0.71μC/cm and 2.03 kV/cm and 8.74μC/cm and 4.14 kV/cm, respectively. The field dependent polarization studies at room temperature indicated that NT is a promising lead-free electrostrictive material for industrial applications. | 2,016 | 0 | null | [
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{
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} | https://www.semanticscholar.org/paper/1c7210e2de9253f2df947d3b741e7d29fb90aefa | Hydrogen storage properties of MgH2‐diatomite composites obtained by high‐energy ball milling | To investigate the effects of specific porous microstructure of diatomite on the hydrogen storage properties of MgH2, a two‐step preparation was carried out. The first step was decrepitation of MgH2 particle size during 10 h of milling. The second step was additional 1 h of milling with diatomite. The microstructure and phase composition of materials was characterized by X‐ray diffraction, whereas the powder morphology and degree of additive dispersion were analyzed by scanning electron microscopy. The hydrogen desorption behaviour of nanocomposites was investigated by differential scanning calorimetry. The results show that addition of porous diatomite structure leads to decrease in desorption temperature, since there was no other effect that can have an influence on kinetics, such as formation of the metastable γ‐phase, reduction of oxides to the native metal and/or homogeneous dispersion of the catalyst. This indicates that the microstructure of added material plays the main role in the enhancement of desorption properties of composites. | Journal of Microscopy | 2,008 | 10 | {
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] | https://vinar.vin.bg.ac.rs//bitstream/id/4816/j.1365-2818.2008.02113.x.pdf | vinar.vin.bg.ac.rs | 638,178 |
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} | https://www.semanticscholar.org/paper/1c81fd0b3cda4a8d415e8600d36c102066d77060 | Tribological properties of black phosphorus nanosheets as oil-based lubricant additives for titanium alloy-steel contacts | The black phosphorus (BP) powders were prepared by high-energy ball milling with red phosphorus as the raw material, and then the BP nanosheets were obtained by liquid-phase exfoliation. The tribological properties of the BP nanosheets as oil-based lubricant additives were investigated by the ball-on-disc tribometer. Results show that compared with the base oil of liquid paraffin (LP), the coefficient of friction and wear rate of the BP nanosheets as the additives in liquid paraffin (BP-LP) are lower for the same loads. BP-LP lubricants could significantly improve the load-bearing capacity of the base oil for titanium alloy-steel contacts and show excellent friction-reducing and anti-wear properties. The surface morphologies and elemental compositions of the friction pairs were further analysed using an optional microscope, scanning electron microscope and X-ray photoelectron spectroscopy. The lubrication mechanism of BP-LP can be attributed to the synergistic effects between lamellar adsorption and interlayer shear of BP nanosheets. | Royal Society Open Science | 2,020 | 9 | {
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"name": "Yuan Gao"
},
{
"authorId": "47373423",
"name": "Kuai-She Wang"
}
] | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.200530 | royalsocietypublishing.org | 638,180 |
1c85bd285f040c63a294bcf9f9af13a6ea4df813 | {
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} | https://www.semanticscholar.org/paper/1c85bd285f040c63a294bcf9f9af13a6ea4df813 | Activation energy study on nanostructured niobium substituted Mg2Ni intermetallic alloy for hydrogen storage application | The magnesium-based metallic alloys have been exhibited to be the improved hydrogen storage materials. In the present investigation, a nanostructured Mg67Ni33 and Niobium substituted intermetallic compound was prepared by a high-energy ball milling technique for hydrogen storage application. Niobium substitution on the pure crystalline intermetallic compound changed the structure of the crystalline to semi-amorphous as well as changed the interplanar spacing after 30 h of milling. Furthermore, the effect of Nb substitution on the inter-planar shift and its corresponding implications on lattice strain, crystallite size, and unit cell volume of the Mg2Ni compound were also discussed. Transmission electron microscope studies confirm the particle size was reduced to less than 100 nm for 30 h of milling. However, SEM images confirm the agglomeration of these nanoparticles and form spherical particles of size around 3–5 μm. XRD and EDS authenticate the presence of oxides. Kissinger’s analysis confirmed that Mg2Ni powder exhibited lower activation energy of 64.101 kJ mol−1 than niobium-substituted alloy powders. The hydrogen charge and discharge potential of these compounds are discussed in detail. | Physica Scripta | 2,022 | 9 | null | [
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} | https://www.semanticscholar.org/paper/1c961898ddaafee0022946ef9aaedf840a44b3d9 | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries | To develop an advanced anode for lithium-ion batteries, the electrochemical performance of a novel material comprising a porous artificial carbon (PAC)–Si composite was investigated. To increase the pore size and surface area of the composite, ammonium bicarbonate (ABC) was introduced during high-energy ball-milling, ensuring a uniform distribution of silicon within the PAC matrix. The physical and structural properties of the developed material were evaluated using several advanced techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and galvanostatic intermittent titration (GITT). Artificial graphite contains several macropores that can accommodate volume hysteresis and provide effective sites for anchoring Si nanoparticles, enabling efficient electrochemical reactions. GITT analysis revealed that the PAC-Si-CB-ABC composite exhibited superior lithium-ion diffusion compared to conventional graphite. The developed PAC(55%)-Si(45%)-CB-ABC electrode with PAA as the binder demonstrated a reversible capacity of 850 mAh g−1 at 100 mA g−1 and a high-rate capability of 600 mAh g−1 at 2000 mA g−1. A full cell employing the NCM622 cathode exhibited reversible cyclability of 128.9 mAh g−1 with a reasonable energy density of 323.3 Wh kg−1. These findings suggest that the developed composite is a useful anode system for advanced lithium-ion batteries. | Nanomaterials | 2,024 | 0 | null | [
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{
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} | https://www.semanticscholar.org/paper/1ca3a6aec725668f9ccc80bed40a22af7b1bcc6f | Effect of High-Energy Ball Milling in Toluene on the Morphology, Phase Evolution, and Contamination for Some Elemental Powders | null | Metallurgical and Materials Transactions. A | 2,023 | 2 | null | [
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} | https://www.semanticscholar.org/paper/1cb1a81d371fdd77c169ab94dc9526db0f70630c | Assessment of Photoelectrode Material Based on (TiO2)1-x / (Al65Cu24Fe11)x in Dye-Sensitized Solar Cell Applications | This paper presents the results obtained for incorporating the Al65Cu24Fe11 material with the conventional TiO2 as the electron injection layer in dye-sensitized solar cells. The icosahedral phase of the Al-Cu-Fe system has attractive physical and optical properties at the target composition, and is obtained by synthesizing the material via the facile high energy ball milling process to ensures the highest possible interdiffusion of elemental powders, followed by heat treatment. The evolution of the i-phase is confirmed via X-ray diffraction, scanning electron microscopy and energy dispersive x-ray spectroscopy. The optical absorption and electrical properties of the compound are investigated by spectrometry, four probe measurement and Mott-Schottky analysis, respectively. Different cells with different percentages (x value) of (TiO2)1-x/(Al65Cu24Fe11)x are constructed and tested to obtain the electrical characteristic curves, efficiency and fill factor to quantify the effect of the proposed material mixture. | Materials Science Forum | 2,018 | 1 | null | [
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1ccb0fecfc499b4bd2189485394c14099819d027 | {
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} | null | https://www.semanticscholar.org/paper/1ccb0fecfc499b4bd2189485394c14099819d027 | Surface modifications of carbon nanotubes and their application to composite materials | Surface modification of CNTs can improve their surface activity,dispersion ability,and the compatibility between CNTs and base matrix,resulting in reinforcement of composite material.The methods of surface modification of CNTs are classified into physical methods and chemical methods.The physical methods consist of high-energy mechanical polishing method,high-energy ball milling method,and ultrasonic vibration method.The chemical methods consist of acid treatment method,method of coupling agent,electroless plating method,high-energy rays irradiation method,and atom transfer radical polymerization.In practical application,several modification methods can be used in combination to make the performance more stable and achieve more diverse properties.Meanwhile,the applications of modified carbon nanotubes to various composite materials are reviewed.Two focal points in modification of carbon nanotubes are proposed:one is to keep structural integrity of carbon nanotube itself,the second is to improve the dispersion of carbon nanotubes in the matrix. | 2,014 | 0 | null | [
{
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"name": "Meng Sheng-ha"
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} | null | https://www.semanticscholar.org/paper/1ceb542e1a72d00e0a79de7b4accf40bde24e111 | Influence of High Energy Ball Mill Technology on Cube Texture Formation of Ni-8at.%W Alloy Substrates for YBCO-Coated Conductors | Ni8W alloy ingots were prepared by SPS technic, followed by homogenizing, cold rolling and recrystallization annealing. The influence of ball milling on cold rolling and cube texture formation of Ni8W alloy substrates was investigated during the course of preparation. Finally, high quality cube-textured Ni8W alloy substrates were successfully obtained using this powder metallurgy process, and characterized by electron backscatter diffraction technic. It indicated that the cube texture fraction was as high as 90% (<10o) when it annealed at 1350°C for 2 h. | 2,014 | 0 | null | [
{
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{
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] | null | null | 638,190 |
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1cf9f059e8e5d473bcece3ef74d866c636cb6eda | {
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} | null | https://www.semanticscholar.org/paper/1cf9f059e8e5d473bcece3ef74d866c636cb6eda | Effect of Particle Size and Lattice Strain on the Debye-Waller Factors of Copper (Cu) Powder Using High Energed Ball Mill | Lattice strains in Cu powder produced by milling have been analyzed by X-ray powder diffraction. The lattice strain (e) and Debye-Waller factor (B) are determined from the half-widths and integrated intensities of the Bragg reflections. In Cu, the Debye-Waller factor is found to increase with the lattice strain. From the correlation between the strain and effective Debye-Waller factor, the Debye-Waller factors for zero strain have been estimated for Cu. The variation of energy of vacancy formation as a function of lattice strain has been studied. | 2,013 | 6 | null | [
{
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"name": "E. Purushotham"
}
] | null | null | 638,193 |
|
1d15ac5408a9a748689f404632e4236964b81805 | {
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} | null | https://www.semanticscholar.org/paper/1d15ac5408a9a748689f404632e4236964b81805 | Recent progress in ultrafast laser structuring of advanced silicon/graphite thick film anodes for Li-ion-cells | Lithium-ion batteries already play an important role in providing electrical energy, and the need for advanced Li-ion cells will continue to grow. Thus, the continuous engineering improvement and material development related to the already existing Li-ion cell concept will be essential.
To increase the energy density on cell level, new materials for anodes and cathodes have to be developed. On anode-side, silicon is a promising material to partly or completely replace the commonly used graphite in SoA Li-ion cells. At full lithiation, the specific capacity of silicon and graphite are 3579 mAh/g and 372 mAh/g, respectively, so an almost one magnitude higher areal energy density on anode side might be possible. However, since silicon undergoes a huge volume change of up to 300 % during cycling, the usage of silicon as anode material is still quite a challenge.
In this work, laser structuring is used to compensate the volume change of silicon during electrochemical cycling and to reduce diffusion overpotential at elevated C-rates. The amount of material which is removed during ultrafast laser ablation has to be kept at a minimum, while the channel width still needs to be large enough to compensate the volume change. When additionally high areal mass loadings are being used, the laser structuring process plays an even more important role. With laser structuring, the active surface of the anode is increased and the diffusion path of the Li ions is shortened, which leads to a lower ohmic cell resistance and overpotential. An improved wetting behaviour with liquid electrolyte can also be achieved by introducing capillary structures in the electrodes, which in turn leads to an increased battery lifetime and a more cost-efficient battery manufacturing process.
Here, a water-based slurry with a high solid fraction was produced via ball milling and was tape casted on a copper current collector foil. The dried electrodes were calendared and subsequently laser structured with an ultra-short pulsed laser. The use of a roll-to-roll system to structure the electrodes was also implemented. To analyse the newly developed Si-C anode materials, CCCV half-cell measurements were carried out. Laser-induced breakdown spectroscopy was used to determine the binder and the lithium distribution in the anodes. The cycled anodes were also examined by SEM to investigate the impact of laser-generated structures on the film adhesion and crumpling of the current collector foil. | 2,020 | 0 | null | [
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{
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"name": "Wilhelm Pfleging"
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] | null | null | 638,195 |
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} | null | https://www.semanticscholar.org/paper/1d26a44607f5015f2a7c359a35a3b65b2dbf0144 | Synthesis of Cu/CNTs nanocomposites for antimicrobial activity | We report a facile method for the synthesis of Cu/multi-walled carbon nanotubes (CNTs) composite powder employing a chemical reduction method followed by high-energy ball milling involving the use of sodium borohydride as a reducing agent and copper sulphate as the precursor material. Control of oxidation of Cu nanoparticles (CuNPs) is a key factor in the synthesis of Cu/CNTs nanocomposites via chemical reduction methods and other methods. To overcome this problem we have applied a new facile rapid synthesis method using a combination of molecular-level mixing followed by high-energy ball milling to produce mostly CuNPs. X-ray diffraction results indicated the presence of mostly CuNPs in composite powder. Scanning electron microscopy and high resolution transmission electron microscopy (HRTEM) was used to ascertain the dispersion of CNTs in Cu matrix. Most of the CuNPs synthesized in the present work had a particle size ranging from 20–50 nm as revealed by HRTEM characterization. Moreover, the CNTs were also found to be homogeneously dispersed in Cu matrix. The Cu/CNTs nanocomposite has a wide range of applications from fuel cells to electronic chip components. In the present work we have investigated the antimicrobial activity of Cu powder and varying concentrations of Cu/CNTs nanocomposite against gram negative Providencia sp. bacteria, and gram positive Bacillus sp. bacteria. These findings suggest that Cu/CNTs nanocomposite can be used in antibacterial controlling systems and as an effective growth inhibitor in the case of various microorganisms. | 2,012 | 35 | {
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{
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] | http://iopscience.iop.org/article/10.1088/2043-6262/3/4/045011/pdf | iopscience.iop.org | 638,198 |
|
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} | null | https://www.semanticscholar.org/paper/1d2cc00c7ed001fda63d297e73f45b510144b42b | The Effect of Mechanical Activation of Elemental Powders on Combustion Synthesis of NbAl3 | The effect of mechanical activation procedures on the combustion synthesis of NbAl3 was investigated. The activation was carried out by a two-step high energy ball milling procedure. In the first milling, aluminum and niobium were milled separately (pre-activation). The mixture of pre-activated powders was then activated in the second milling. Reaction synthesis, by simultaneous combustion mode, was conducted on compacted pellets made of powder mixtures with and without pre-activation. The thermal behavior of the compacted pellets upon heating was recorded and the main thermal combustion reaction characteristics were evaluated. The two-step procedure produced aggregates with a globular dispersion of niobium due to increased particle hardness and decreasing mean particle size during pre-activation milling. Analysis of pellet thermal behavior showed the two-step milling procedure could enhance reaction performance by increasing maximum reaction heating rate and temperature gain during reaction. | 2,010 | 0 | null | [
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"name": "Cláudio José da Rocha"
},
{
"authorId": "80258705",
"name": "R. M. L. Neto"
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} | https://www.semanticscholar.org/paper/1d3456093da0da4ffb3ad9047d29828652906130 | Catalytically Enhanced Hydrogen Sorption in Mg-MgH2 by Coupling Vanadium-Based Catalyst and Carbon Nanotubes | Mg (MgH2)-based composites, using carbon nanotubes (CNTs) and pre-synthesized vanadium-based complex (VCat) as the catalysts, were prepared by high-energy ball milling technique. The synergistic effect of coupling CNTs and VCat in MgH2 was observed for an ultra-fast absorption rate of 6.50 wt. % of hydrogen per minute and 6.50 wt. % of hydrogen release in 10 min at 200 °C and 300 °C, respectively. The temperature programmed desorption (TPD) results reveal that coupling VCat and CNTs reduces both peak and onset temperatures by more than 60 °C and 114 °C, respectively. In addition, the presence of both VCat and CNTs reduces the enthalpy and entropy of desorption of about 7 kJ/mol H2 and 11 J/mol H2·K, respectively, as compared to those of the commercial MgH2, which ascribe to the decrease of desorption temperature. From the study of the effect of CNTs milling time, it is shown that partially destroyed CNTs (shorter milling time) are better to enhance the hydrogen sorption performance. | Materials | 2,015 | 24 | {
"status": "GOLD",
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"authorId": "46309300",
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{
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{
"authorId": "144831585",
"name": "Zhigang Chen"
},
{
"authorId": "144302647",
"name": "X. Yao"
}
] | https://www.mdpi.com/1996-1944/8/6/3491/pdf?version=1434102672 | www.mdpi.com | 638,200 |
1d34da658cf8bff424c5ded760b47a3310db1df9 | {
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} | null | https://www.semanticscholar.org/paper/1d34da658cf8bff424c5ded760b47a3310db1df9 | SANS EXAMINATION OF THE Mg3CoNi2ALLOY FOR HYDROGEN STORAGE MATERIAL | The nanocrystalline Mg 3 CoNi 2 alloys have been synthesized from Mg, Co and Ni pure metal powder by using a SPEX 8000 High Energy Milling through wet method with its vial and ball made of stainless steel. A weight ratio of ball to sample was set at 8:1 and the milling times were set at 20 and 30 h. SANS measurements were performed in an instrument SMARTer at BATAN using a distances between 1.5, 4 and 13 m and a wavelength, λ, of 0.39 nm. The SANS investigation results showed that the intensity profiles decrease with q and a power law exponent of about 4. It is suggested that surface Porod scattering dominates. The relative intensity decreases with increased hydrogen concentration, indicating a decline in surface area. Hydrogenation leads to significant changes in the scattering curves mainly due to the 1 Mg 2 Ni attice expansion and changes of the Mg 2 Ni ‐ H / Mg 2 Ni phase boundaries and that of the Mg 2 Ni or Mg 2 NiH 4 grain boundaries. The samples absorb about 3.3 and 1.9 wt% hydrogen with increasing milling time of 20 and 30 h, respectively. | 2,010 | 0 | null | [
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},
{
"authorId": "95363000",
"name": "Y. A. Mulyana"
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] | null | null | 638,202 |
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1d49dcd208e943c28173fb7f9bc95986fe0c0ad5 | {
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} | https://www.semanticscholar.org/paper/1d49dcd208e943c28173fb7f9bc95986fe0c0ad5 | Overcoming intrinsic defects of the hole transport layer with optimized carbon nanorods for perovskite solar cells. | To overcome the intrinsic chemical-reduction-activity of highly p-doped PEDOT:PSS and improve the open-circuit voltage (Voc) of planar inverted perovskite solar cells, a kind of oxidized carbon nanorods (OCNRs) is developed by a ball-milling/chemical-oxidation method and incorporated into PEDOT:PSS hole transport layer (HTL). The incorporation of OCNRs can increase the work function of the PEDOT:PSS layer, which avoids the energy-level mismatch between the PEDOT:PSS HTL and the HOMO level of the CH3NH3PbI3 perovskite layer, leading to a relatively high Voc of 1.01 V (vs. 0.92 V for the PEDOT:PSS device). Moreover, the introduction of OCNRs into the PEDOT:PSS HTL increases the grain size and uniformity of the perovskite layer, accompanied by the improved charge transport ability. As a result, the fill factor of perovskite solar cells is increased from 75.4% to 81.7%, and the best power conversion efficiency of 19.02% is achieved. | Nanoscale | 2,019 | 9 | null | [
{
"authorId": "49970418",
"name": "Zhiqi Li"
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{
"authorId": "14814946",
"name": "Jiajun Dong"
},
{
"authorId": "15597605",
"name": "Wenbin Han"
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{
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{
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{
"authorId": "144600352",
"name": "Liang Shen"
},
{
"authorId": "3189543",
"name": "Wenbin Guo"
}
] | null | null | 638,203 |
1d4d9bb367a555fc6fe80da05219224ada57fe39 | {
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} | null | https://www.semanticscholar.org/paper/1d4d9bb367a555fc6fe80da05219224ada57fe39 | High‐Pressure Study of Mn(BH4)2 Reveals a Stable Polymorph with High Hydrogen Density. | α-Mn(BH4)2 is prepared by high—energy ball milling of stoichiometric amounts of LiBH4 and MnCl2 or by metathesis reaction of the latter precursors in Et2O to yield NaMn2(BH4)2·2Et2O followed by desolvation under vacuum at 110 °C. | 2,016 | 0 | null | [
{
"authorId": "5232533",
"name": "Y. Filinchuk"
}
] | null | null | 638,205 |
|
1d5fd2ef1f129777b825824429b0761e4ed89d2e | {
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} | null | https://www.semanticscholar.org/paper/1d5fd2ef1f129777b825824429b0761e4ed89d2e | The magnetic properties of MMCo5 (MM=Mischmetal) nanoflakes prepared by multistep (three steps) surfactant-assisted ball milling | The hard magnetic MMCo5 nanoflakes with high coercivity and narrow size distribution have been successfully obtained by three steps surfactant-assisted ball milling (SABM). The magnetic properties, phase structure and morphology of these MMCo5 nanoflakes were studied in this work. The coercivity and the remanence ratio of MMCo5 nanoflakes reached to 5.89 kOe and 0.75, respectively. The X-ray powder diffraction (XRD) patterns indicated that the MMCo5 nanoflakes were CaCu5-type hexagonal crystal structure. The average thickness, in-plane size and aspect ratio reached to 20 nm, 0.9 μm and 60, respectively. The low cost and great properties of MMCo5 nanoflakes with a centralized thickness distribution could be the building blocks for the future high-performance nanocomposite permanent magnets with an enhanced energy product. | 2,017 | 3 | {
"status": "GOLD",
"url": "https://aip.scitation.org/doi/pdf/10.1063/1.4973395"
} | [
{
"authorId": "30681791",
"name": "Zhao Xiaomeng"
},
{
"authorId": "102859706",
"name": "W. Zuo"
},
{
"authorId": "2107449474",
"name": "M. Zhang"
},
{
"authorId": "2146030772",
"name": "Dan Liu"
},
{
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"name": "Jiefu Xiong"
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{
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"name": "R. Shang"
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{
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"name": "J. Zhang"
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{
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"name": "T. Zhao"
},
{
"authorId": "1400129858",
"name": "J. Sun"
},
{
"authorId": "7735392",
"name": "B. Shen"
}
] | https://aip.scitation.org/doi/pdf/10.1063/1.4973395 | aip.scitation.org | 638,206 |
|
1d627e155f1661be6a69831b26c9e8d83bf5ed4e | {
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} | null | https://www.semanticscholar.org/paper/1d627e155f1661be6a69831b26c9e8d83bf5ed4e | Experimental and molecular dynamic studies of phase transformation and amorphization in silicon during high-energy ball milling | null | Materials Today: Proceedings | 2,022 | 2 | null | [
{
"authorId": "1840484470",
"name": "S. O. Mirabootalebi"
}
] | null | null | 638,207 |
1d65473fad36b710c6fcaa0d659233e4f3f30b51 | {
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"DOI": "10.1039/C8TA02590H",
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} | null | https://www.semanticscholar.org/paper/1d65473fad36b710c6fcaa0d659233e4f3f30b51 | Strong, persistent superficial oxidation-assisted chemical bonding of black phosphorus with multiwall carbon nanotubes for high-capacity ultradurable storage of lithium and sodium | We report a new composite of black phosphorus and multiwall carbon nanotubes (BP–CNT) prepared via a surface oxidation-assisted chemical bonding procedure. The controlled air exposure successfully changed the naturally hydrophobic BP powder to the desired hydrophilicity, which was found indispensable to stable bond formation between the BP and the functionalized CNTs during ball milling. The BP–CNT composites were further fabricated into anodes for both Li- and Na-ion batteries, using a sodium carboxyl methyl cellulose–poly(acrylic acid) (NaCMC–PAA) binary polymeric binder. The hydrophilicity of BP also played a very important role in forming strong bonds with the hydroxyl groups of NaCMC and the carboxylic acid groups of PAA. The plausible mechanisms of stable bond formation were comprehensively examined, and the results revealed two types of strong connections: P–O–C bonds and dehydration cross links. Consequently, the material delivered outstanding electrochemical performance in the anode, with a high discharge capacity of 1681 mA h g−1 after 400 cycles at a current density of 0.2C (1C = 2596 mA g−1) for Li-ion batteries. It also successfully delivered a first discharge capacity of 2073 and 850 mA h g−1 at 0.2C and 2C for Na-ion batteries, respectively, with excellent capacity retentions at both rates after 200 cycles. These salient results, which originated from the modified hydrophilic BP, will give further impetus to explore BP-based composites for use as high-performance materials for advanced energy storage applications. | 2,018 | 56 | null | [
{
"authorId": "1401300242",
"name": "Safa Haghighat-Shishavan"
},
{
"authorId": "1401300269",
"name": "Masoud Nazarian-Samani"
},
{
"authorId": "1401300267",
"name": "Mahboobeh Nazarian-Samani"
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{
"authorId": "93561376",
"name": "Ha-Kyung Roh"
},
{
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"name": "K. Chung"
},
{
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},
{
"authorId": "1401300233",
"name": "S. Kashani-Bozorg"
},
{
"authorId": "2029010773",
"name": "Kwang-bum Kim"
}
] | null | null | 638,208 |
|
1d7c68d1290019af24cf127cc308d0bf74abb04c | {
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} | null | https://www.semanticscholar.org/paper/1d7c68d1290019af24cf127cc308d0bf74abb04c | Preparation for intermetallic powders of Cu-Sn and Cu-Ni-Sn systems via solid-liquid reaction milling technique | The Cu-Sn binary intermetallic powders were obtained via a patented reaction ball milling technique. The Sn melt reacted with the solid-state Cu during the milling process at different temperatures for different intervals. Two kinds of binary intermetallics were obtained. For 12 h, Cu6Sn5 was prepared by milling Sn melt at 573 K while Cu3Sn by milling Sn melt at 773 K. And a mixture of Cu6Sn5 and Cu3Sn was fabricated at 673 K. All these intermetallic powders had mean grain sizes of less than 100 nm. A finer microstructure was obtained by milling Sn melt blended with 20%(mass fraction) Ni powders at 573 K for 12 h. The reaction mechanism and advantages were discussed in comparison with that of high-energy ball milling. The results show the solutionizing of Ni powders in the Cu6Sn5 intermetallic. | 2,007 | 2 | null | [
{
"authorId": "144835978",
"name": "Chen Ding"
},
{
"authorId": "2146054262",
"name": "Wu Wei"
},
{
"authorId": "72774289",
"name": "Cheng Zhen-hua"
},
{
"authorId": "117146668",
"name": "Fu Dingfa"
}
] | null | null | 638,211 |
|
1d843fc104f4776d95ff02cd4d32b563e16511ed | {
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} | null | https://www.semanticscholar.org/paper/1d843fc104f4776d95ff02cd4d32b563e16511ed | Method for preparig lithium secondary cell silicon/rich-lithium phase composite cathode material by high energy ball milling | The present invention relates to a lithium secondary battery a high-energy ball milling Si / Li-rich phase composite cathode material and belongs to the field of electrochemical power source material. The method comprises the steps of, silicon oxide and lithium metal as a synthetic raw material, silicon monoxide and controlling the mixing molar ratio of lithium metal in 1/1 to 2, the ball milling process mixed synthetic materials, milling time control 1 ~ 20 hours. Using this method of preparing composite negative electrode material for lithium secondary battery negative electrode composite prepared with a variety of other silicon-containing materials, compared with a low raw material requirements, much lower synthesis temperature, low cost, materials with high specific capacity and good cycle performance characteristics. | 2,006 | 0 | null | [
{
"authorId": "94113511",
"name": "徐孝和"
},
{
"authorId": "82475034",
"name": "杨学林"
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{
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{
"authorId": "93857973",
"name": "许晓雄"
},
{
"authorId": "72490964",
"name": "顾中华"
}
] | null | null | 638,213 |
|
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} | null | https://www.semanticscholar.org/paper/1d8e27006449814ccd88f5ebb86f3fc577f831e7 | Nanoscale Grain Refinement and H‐Sorption Properties of MgH2 Processed by High‐Pressure Torsion and Other Mechanical Routes | MgH2 is a promising material for solid‐state hydrogen storage due to its high gravimetric and volumetric storage capacity and its relatively low cost. Severe plastic deformation (SPD) processing techniques are being explored as an alternative to high‐energy ball‐milling (HEBM) in order to obtain more air resistant materials and reduce processing times. In this work, Mg, MgH2, and MgH2–Fe mixtures were severely mechanically processed by different techniques such as high‐pressure torsion (HPT), extensive cold forging, and cold rolling. A very significant grain refinement was achieved when using MgH2 instead of Mg as raw material. The mean crystallite sizes observed ranged from 10 to 30 nm, depending on the processing conditions. Enhanced H‐sorption properties were observed for the MgH2‐based nanocomposites processed by HPT when compared with MgH2 mixtures. Additionally, cold forging and cold rolling also proved effective in nanostructuring MgH2. These results suggest a high potential for innovative application with the use of low cost mechanical processing routes to produce Mg‐based nanomaterials with attractive hydrogen storage properties. | 2,010 | 79 | null | [
{
"authorId": "2185180",
"name": "D. Leiva"
},
{
"authorId": "39875267",
"name": "A. Jorge"
},
{
"authorId": "92032101",
"name": "T. T. Ishikawa"
},
{
"authorId": "145049004",
"name": "J. Huot"
},
{
"authorId": "88993183",
"name": "D. Fruchart"
},
{
"authorId": "40434877",
"name": "S. Miraglia"
},
{
"authorId": "16117610",
"name": "C. Kiminami"
},
{
"authorId": "13907272",
"name": "W. Botta"
}
] | null | null | 638,214 |
|
1d95b37c2314c3da284324e9b60188fbe8aab767 | {
"ACL": null,
"ArXiv": null,
"CorpusId": 229264425,
"DBLP": null,
"DOI": "10.29117/quarfe.2020.0005",
"MAG": "3105244153",
"PubMed": null,
"PubMedCentral": null
} | null | https://www.semanticscholar.org/paper/1d95b37c2314c3da284324e9b60188fbe8aab767 | SiO2 Coated Li-rich Layered Oxides-Li1.2Ni0.13Mn0.54Co0.13O2 for efficient energy storage applications | Lithium ion batteries (LIBs) are attractive for energy storage application. In this regard, lithium rich layered oxides (LLOs), are considered viable cathodes due to their tempting properties such as lower production cost, faster manufacturing process, excellent reversible capacity, and better electrochemical performance at high voltages. Despite these properties, LLOs lack in cyclic stability and inferior capacity retention. This study proposes a surface modification technique to overcome the above-mentioned limitations in which a layer of silica (SiO2) has been coated on the particles of Li1.2Ni0.13Mn0.54Co0.13O2. The Li1.2Ni0.13Mn0.54Co0.13O2 was synthesized by a sol-gel process and then coated with SiO2 (SiO2=1.0 wt. %, 1.5 wt. %, and 2.0 wt. %). The coatings were undertaken through a dry ball milling technique. Different characterization test such as X-Ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), elemental mapping, and X-ray photoelectron spectroscopy (XPS), were utilized to prove phase pure material formation and identify the SiO2 layer on the surface of Li1.2Ni0.13Mn0.54Co0.13O2. The electrochemical measurements, confirm the improvement in capacity retention and cyclability of SiO2 coated Li1.2Ni0.13Mn0.54Co0.13O2 samples with reference to the uncoated samples. This improvement can be ascribed to the protective and barrier effect of the coated layer on the LLOs particles avoiding any unwanted side reactions when the cathode is exposed to the electrolyte. A small trade-off between electrochemical performances and the coating thickness confirms the best efficiency of 1 wt.% SiO2 coated Li1.2Ni0.13Mn0.54Co0.13O2 when compared to other coated samples. | 2,020 | 0 | {
"status": "BRONZE",
"url": "http://qspace.qu.edu.qa/bitstream/10576/16540/1/SiO2%20Coated%20Li-rich%20Layered%20Oxides-Li1.2Ni0.13Mn0.54Co0.13O2%20for%20efficient%20energy%20storage%20applications.pdf"
} | [
{
"authorId": "1749858518",
"name": "J. Abraham"
},
{
"authorId": "2283576009",
"name": "Umair Nisar"
},
{
"authorId": "1712184444",
"name": "Haya Monawwar"
},
{
"authorId": "1712133140",
"name": "A. A. Quddus"
},
{
"authorId": "1837603",
"name": "A. Shakoor"
},
{
"authorId": "114669821",
"name": "M. Saleh"
},
{
"authorId": "37557822",
"name": "R. Kahraman"
},
{
"authorId": "9943523",
"name": "S. AlQaradawi"
},
{
"authorId": "9946692",
"name": "A. Aljaber"
}
] | http://qspace.qu.edu.qa/bitstream/10576/16540/1/SiO2%20Coated%20Li-rich%20Layered%20Oxides-Li1.2Ni0.13Mn0.54Co0.13O2%20for%20efficient%20energy%20storage%20applications.pdf | qspace.qu.edu.qa | 638,215 |
|
b509fe62b3cd9c4143559e1e6ab70d174e680048 | {
"ACL": null,
"ArXiv": null,
"CorpusId": 275318530,
"DBLP": null,
"DOI": "10.18311/jmmf/2024/47264",
"MAG": null,
"PubMed": null,
"PubMedCentral": null
} | {
"alternate_issns": null,
"alternate_names": [
"J Mine Met Fuel"
],
"alternate_urls": null,
"id": "9876a904-3997-4c4d-b2ca-17b6cdf738fd",
"issn": "0022-2755",
"name": "Journal of Mines, Metals and Fuels",
"type": "journal",
"url": null
} | https://www.semanticscholar.org/paper/b509fe62b3cd9c4143559e1e6ab70d174e680048 | Temperature-dependent Growth Mechanism of PVP-based Copper Sulfide (CuS) Nanocomposite | This study focuses on the proficient synthesis of a Copper Sulfide (CuS) nanocomposite using the hydrothermal method at four distinct reaction temperatures: 130°C, 150°C, 170°C, and 200°C, each with a 5-hour duration. Comprehensive characterization through Powder X-ray Diffraction (PXRD), UV-visible spectroscopy (UV-vis), and Scanning Electron Microscopy (SEM) has been undertaken to analyze the morphological, optical, and compositional aspects of the synthesized sample. Key findings include the identification of a hexagonal phase of CuS nanostructures, closely aligned with reference data (JCPDS card no 9000062), and an average crystallite size ranging from 17nm to 26nm. SEM imaging reveals a distinctive petal-like flower morphology in the CuS nanomaterial. Energy Dispersive Spectra (EDS) confirms the presence of copper (Cu) and sulfur (S) elements in the nanocomposite. The optical analysis demonstrates a direct type of allowed transition and variable band gap values (ranging from 2.07eV to 1.92eV), suggesting potential applications in optoelectronics and the significant influence of reaction temperature on the stability and size of the CuS nanocomposite, highlighting the critical role of temperature control in the synthesis process. | Journal of Mines, Metals and Fuels | 2,024 | 0 | null | [
{
"authorId": "2338639913",
"name": "H. K. Deepa"
},
{
"authorId": "2309455950",
"name": "A. J. Reddy"
},
{
"authorId": null,
"name": "Kalpana Sharma"
}
] | null | null | 638,593 |
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