| 摘要 |
PROBLEM TO BE SOLVED: To prevent leakage of electrolyte, and improve a charge-discharge cycle characteristic by constituting a positive electrode sheet of two or more mix layers, and containing different positive electride active materials in the adjacent mix layers. SOLUTION: In a positive electrode sheet, adjacent mix layers constitute different positive electrode active materials by two layers or three layers. Compounds capable of storing-releasing a light metal ion, for example, light metal, a carbonaceous compound, light metal alloy or the like are used as a negative electrode material. This may be used independently or by a combination, and these negative electrode materials can give effects of high charge- discharge electric potential, high safety and a high cycle characteristic. |
