PRE-LITHIATED SILICON ANODES WITH PVDF BINDER

摘要

A pre-lithiated silicon anode comprising a PVDF binder at 5-12 wt. % for use in a Li-ion cell is provided. In particular instances, a conductive additive may be added at less than 5 wt. %. The Si anode with PVDF binder is pre-lithiated prior to cell assembly and following Si anode fabrication. The combination of pre-lithiation and PVDF in the Si anode for use in a rechargeable Li-ion cell shows the unexpected result of extending the cycle life.