| 摘要 |
PURPOSE: A positive electrode is provided to suppress swelling in high temperature conservation while not degrading cycle property and to improve chemical stability of a battery. CONSTITUTION: A positive electrode has salts represented by chemical formula (1) on the surface of an active material included in a positive active material layer installed at a current collector, or at least the surface of the positive active material layer. In chemical formula (1), R is a hydrocarbon group which may have an unsaturated bond, a group in which the hydrocarbon group is halogenated or hydroxylated, or a hydrogen group; R1 and R2 are independently unsaturated bond and hydrocarbon group which may have N or O; A^a- is anions of acids which can be bonded with at least one of R, R1, R2 and the ring; M^x+ is a metallic ion forming salts together with A^a-; and a, b, x and y are an integer of 1 or more. |
