| abstract |
The present invention claims the addition of vinylene carbonate (VC) to the electrolyte of a lithium ion cell with a structured silicon composite anode, ie an anode comprising fibers or particles of silicon, and optionally addition of fluoroethylene carbonate. Doing. Such additives significantly improve the cycling performance of the cell. A VC content in the range of 3.5 to 8 wt%, based on the total weight of the electrolyte, was found to be most suitable. |