Secondary battery

摘要

A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode having a positive electrode active material containing an transition metal complex oxide containing lithium, a negative electrode containing a negative electrode material capable of storing and releasing a lithium ion, and an electrolytic solution containing a nonaqueous solvent, an electrolyte, and an organic compound expressed in formula 1. where R1, R2, R3, R4, R5, and R6 have individually at least one of H and a group containing a vinyl group, and the number of H substituent is four or less.