Thus, in Mg-ion batteries it is potentially possible to take advantage of its gravimetric energy density (2,206 mAh g−1) and volumetric energy density of 3,833 mAh cm−3, which is higher than that of lithium (2,046 mAh cm−3). However, even when no dendrite growth occurs, nanostructuring or scaffolding of the pure metal anodes may be required to achieve high charge/discharge rates and avoid large volume changes, sacrificing some of the volumetric energy density. Currently, a key consideration with Mg anodes is the electrolyte system, and development of efficient and noncorrosive electrolytes has been an active research area. In recent work, very promising halogen-free, noncorrosive chemistry for electrolytes was reported with coulombic efficiencies of 99% for Mg plating and stripping66. Another interesting strategy suggested for Mg-ion electrolytes is addition of a lithium salt which increases conductivity of the electrolyte, and at the same time enables use of Li-ion cathode chemistries, and improves cycling markedly6467.