Electrolytes, cells and methods of forming passivation layers

摘要

An electrolyte comprising at least one organic aprotic solvent, at least one boron cluster salt and at least one chelatoborate additive. A method of forming an SEI layer in a cell comprising a positive electrode, a negative electrode and an electrolyte, said method comprising the step of overcharging the electrolyte prior to fabricating the cell, or said cell during the formation cycle.