| 摘要 |
A lithium ion secondary battery includes a positive electrode capable of occluding and discharging lithium ions, a negative electrode capable of occluding and discharging the lithium ions, and a nonaqueous electrolyte including a lithium salt, and being reversively charged/discharged. The positive electrode includes a metal plate, a metal film formed on a surface of the metal plate, and a positive electrode active material layer, the metal film includes one or more metals selected from the group consisting of ruthenium, osmium, palladium, and platinum having a orientation, the positive electrode active material layer is a compound expressed by the following expression: LiCoxNi1-xO2, (where 0≦̸x≦̸1) and is epitaxially grown and formed on a surface of the metal film, and the positive electrode active material is formed such that a c axis of a crystal structure of the positive electrode active material is perpendicular to the metal film. |
