LITHIUM-ALUMINIUM ALLOY AND PRODUCTION METHOD AND USE THEREOF

摘要

A lithium-aluminium alloy for a negative electrode material of a secondary battery and a production method and use thereof. The composition of the lithium-aluminium alloy is: 0.1-4.0 wt% of aluminium, the balance being lithium and inevitable impurities. By adding aluminium in a specific content, the lithium-aluminium alloy not only maintains the advantage of the lithium capacity, but also improves the dendritic crystal inhibition effect; during charging and discharging, there is a single phase with no phase change occurring; thus the charging-discharging cycle life of the lithium-aluminium alloy can be prolonged.