| abstract |
A battery capable of improving high temperature characteristics is provided. An electrolytic solution is impregnated in a separator. The electrolytic solution contains an imide salt expressed by LiN(C n F 2n+1 SO 2 )(C m F 2m+1 SO 2 ) (n and m are respectively an integer number from 1 to 4, and a different value from each other). Thereby, a coat stable even at high temperatures can be formed on the surface of a cathode or an anode, and chemical stability of the electrolytic solution at high temperatures can be improved. LiPF 6 is preferably mixed in the electrolytic solution. |