Strategies to Improve the Cycling Performance of Lithium Storage Alloys
Metals and intermetallics, such as Al, Sn, Si, Sb, SnSb, etc. which can reversibly alloy with Li are well known for their high theoretical specific charges and charge densities and have repeatedly been suggested as materials for the negative electrode in Li-ion batteries. Unfortunately, the uptake of such large amounts of Li causes enormous volume changes, which for conventional coarse-grained or bulky materials lead to a fast mechanical disintegration and to electrode failure.
KeywordsComposite Electrode Solid Electrolyte Interphase Electrochemical Impedance Spectrum Bulky Material Phase Separation Effect
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