Method of mfg. electrode of battery


Application Number: 00108370
Application Date: 2000.05.12
Publication Number: 1274178
Publication Date: 2000.11.22
Priority Information: 1999/5/14 JP 134897/99
International: H01M4/04;H01M4/26;H01M4/80
Applicant(s) Name: Matsushita Electric Industrial Co., Ltd.
Address:
Inventor(s) Name: Matsumura Uruu;Takaki Ko;Fujioka Tokuyuki
Patent Agency Code: 31100
Patent Agent: zhang mingyu
Abstract The present invention discloses a method for manufacturing an electrode for a battery by filling an active material into a three-dimensional porous metal substrate sheet and cutting said sheet to a certain size, comprising the steps of: pressing the portion to be cut and the periphery thereof in the substrate sheet; coating the portion to be cut and the periphery thereof in the substrate sheet with a resin; and/or impregnating the portion to be cut and the periphery thereof in the substrate sheet with a liquid containing a resin component, in addition to the steps of: filling an active material into the substrate sheet; and cutting the substrate sheet at the portion to be cut. This method prevents the occurrence of burrs and cuttings while the sheet is being cut and the coming off of the active material, thereby suppressing internal short circuit of the battery. As a result, a battery hardly suffering from a deterioration in preservation performance and charge-discharge cycle life can be obtained.