NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY

摘要

An object of the present invention is to provide a non-aqueous liquid electrolyte secondary battery having excellent durability and capacity by improving oxygen radical resistance of a non-aqueous liquid electrolyte. Disclosed are a non-aqueous liquid electrolyte secondary battery, comprising a cathode, an anode and a non-aqueous liquid electrolyte present between the cathode and the anode, wherein the non-aqueous liquid electrolyte secondary battery has a closed structure in which the cathode, the anode and the non-aqueous liquid electrolyte are insulated from at least carbon dioxide and water; wherein the non-aqueous liquid electrolyte secondary battery has a discharge voltage of 3V or less relative to a Li/Li+ reference electrode; and wherein the non-aqueous liquid electrolyte comprises two or more kinds of anions, and a non-aqueous liquid electrolyte for the non-aqueous liquid electrolyte secondary battery.