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|1. (WO2016063902) SECONDARY BATTERY|
The purpose of the present invention is to provide a secondary battery having a high energy density and a long service life. The present invention pertains to a secondary battery having: a negative electrode including a silicon-containing compound; and an electrolytic solution in which a fluorine-containing ether compound, a fluorine-containing phosphoric acid ester compound, a sulfone compound, and a cyclic carbonate compound are each included at a predetermined amount.