| 摘要 |
PURPOSE:To set a grain size of positive electrode active material large, and reduce a self-discharge rate by granulating material powder comprising inorganic compound for the positive electrode active material preliminarily, and then baking obtained grains. CONSTITUTION:In a nonaqueous secondary battery using inorganic compound for positive electrode active material, material powders comprising inorganic compound are mixed, granulated, and baked, and obtained matters are used for the positive electrode active material. An average grain size of the positive active material can thus be set large, thereby a nonaqueous electrolyte secondary battery with a reduced self-discharge rate can be provided. |
