Stoichiometric amounts of LiOH*H2O and NH4VO3 (Li:V = 1:3, molar ratio) were mixed in deionized water with continuous magnetic stirring. The resultant little yellow solution was then transferred to a 100 mL Teflon lined autoclave. The autoclave was heated at 160 degC and maintained for 1 h under the microwave hydrothermal system (Sineo MDS-8, China). After the reaction, the autoclave was cooled to room temperature naturally and a colorless clear solution was obtained. This solution was dried in air at 80 degC for 10 h to prepare an orange gel. The gel was ground to powders and then calcined at 400 degC for 10 h in a muffle furnace under air atmosphere. Finally, the powders were cooled to room temperature naturally and ground again to obtain the final products, named as sample A.
Li:V
molar ratio
1:3
Teflon lined autoclave
100 mL
mL
solution
dried in air
80 degC
degC
solution
dried in air
10 h
h
powders
calcined
400 degC
degC
powders
calcined
10 h
h