| 摘要 |
PURPOSE:To provide a positive electrode excellent in electron conductivity, ion mobility and the like and improve load characteristic by adding, as conductive agent, amorphous carbon powder having low bulk density to a positive electrode mix together with graphite powder having high conductivity. CONSTITUTION:A positive electrode mix obtained by mixing a lithium transition metal composite oxide powder forming a positive electrode active material with carbon powder forming a conductive agent and a binder is applied to a positive electrode current collector to constitute a positive electrode 3. The carbon powder forming the conductive agent consists of a mixed powder of graphite powder and amorphous carbon powder. For example, metal lithium 2 forming a negative electrode active material is closely adhered to an anode cup 1 to form a negative electrode can, the positive electrode active material, and the conductive agent, and the binder are kneaded together to prepare the positive electrode mix, which is then made into slurry, applied to a band Al foil, and dried to form the positive electrode 3 mix layer. Thus, the pores of the positive electrode 3 mix layer can be held even by compression to provide the positive electrode 3 excellent in electron conductivity, ion mobility, and electrode filling property, and the load characteristic of the resulting battery can be improved. |
