To improve the conformability between a rustproof agent and a polymer electrolyte and to improve battery performance, such as the storage performance and cycle characteristic of a battery by using a copper foil processed with the organic rustproof agent on the surface as the current collector of a negative electrode.
A copper foil, processed with an organic rustproof agent on the surface, is used as the negative electrode current collector of a battery. Benzotriazole or its derivative is suitable as the organic rustproof agent. The surface of the copper foil is covered with an organic material for interrupting the contact between the copper foil and air, thus the organic rustproof agent exhibits rustproof effects, and it differs from the rustproof process by sacrificial rustproofing or an oxide film, such as a rustproof metal element. No undesirable electrochemical reaction occurs in the battery, but rather presents effects for exhibiting a good battery characteristic. For the surface treatment of the copper foil by the organic rustproof agent, for example, the copper foil is dipped in a solution containing the organic rustproof agent, or the copper foil is coated with the solution containing the organic rustproof agent then dried.
| JP4526825 | Energy device |
| JP4016154 | Manufacturing method of metal leaf current collector |
| JP2018073814 | LOGICAL BATTERY |
KUZE SADAMU
HIGAKI KATSUHIRO
YOKOYAMA AKIMICHI
SUGIYAMA HIROSHI
KAWAI TETSUO
