LITHIUM-ION BATTERY ELECTROLYTE

An electrode is presented. The electrode has a current collector and a positive active material layer deposited on it. The electrode includes an electrolyte. The electrolyte composition includes 1M lithium hexafluorophosphate and 0.5 wt. % vinylene carbonate, dissolved in a solvent mixture of ethylene carbonate and ethyl methyl carbonate in a 25/75 volume ratio. This electrolyte permeates the surface of the positive active material layer, effectively suppressing electrochemical oxidation during the electrochemical cycling process, thus increasing the stability and performance of the electrode assembly.