SHUTDOWN AND REDOX SHUTTLE ADDITIVES FOR BATTERIES

摘要

A group of shutdown additives are provided in the electrolyte of rechargeable batteries or electrochemical storage or secondary cells. The additives are low molecular weight organic aromatic compounds, and function to prevent overcharging of the cell. Some of the additives also function as redox shuttle additives at less server overcharging conditions. These additives can be used in any rechargeable battery utilizing a non-aqueous or solid polymer electrolyte and a positive electrode which is fully charged at about 4 V vs. Li/Li+. These include batteries for consumer electronics, communications, power tools, electric vehicles, and load leveling.