| 摘要 |
This invention provides a battery which can realize a high energy density and excellent cycle characteristics. A wound electrode (20) having a laminated structure of a positive electrode (21), a negative electrode (22), and a separator (23) is housed in a battery can (11). The positive electrode (21) comprises a positive electrode current collector (21A) and a positive electrode active material layer (21B), containing an ambient temperature molten salt and a positive electrode active material, provided on the positive electrode current collector (21A). The content of the ambient temperature molten salt in the positive electrode active material layer (21B) is not less than 0.1% by mass and not more than 5% by mass. The ambient temperature molten salt is, for example, a tertiary or quaternary ammonium salt comprising a tertiary or quaternary ammonium cation and a fluorine atom-containing anion. |
