| abstract |
(57) [Summary] (Modified) [Problem] To provide a non-aqueous electrolyte battery having high safety and high battery performance [Solution] Non-aqueous electrolyte having room temperature molten salt, positive electrode, negative electrode And a non-aqueous electrolyte battery in which a power generation element including a separator is included in an exterior material, wherein the room-temperature molten salt includes a quaternary ammonium organic cation represented by Formula 1 or Formula 2 and an anion composed of only a nonmetal element. And the non-aqueous electrolyte comprises a lithium salt formed from lithium ions and an anion consisting of only a non-metallic element. A non-aqueous electrolyte battery containing the same at a concentration of 5 mol / l or more, and wherein the non-aqueous electrolyte contains a cyclic ester having a π bond. |