| 摘要 |
PROBLEM TO BE SOLVED: To achieve an electrode for a lithium ion secondary battery improved in safety against overcharging.SOLUTION: An electrode includes, on a positive electrode collector, a positive electrode first layer containing at least a resin material, a conductive agent and a foaming material, and a positive electrode second layer containing a positive electrode active material, a conductive agent and a binder. The foaming material in the positive electrode first layer is oxidatively decomposed at a high voltage in an overcharged state, and is thermally foamed during a temperature rising process succeeding to the oxidative decomposition. |
