Collector substrate of electrode for alkaline secondary cell, electrode and alkaline secondary cell

Application Number: 00108695
Application Date: 2000.05.19
Publication Number: 1274958
Publication Date: 2000.11.29
Priority Information: 1999/5/19 JP 138746/99; 2000/1/20 JP 11853/00
International: H01M4/70;H01M4/24;H01M4/32
Applicant(s) Name: Toshiba Battery Co., Ltd.
Inventor(s) Name: Miyamoto Kunihiko;Hiruma Masayoshi;Takesawa Satoru
Patent Agency Code: 31100
Patent Agent: zhang mingyu
Abstract Provided is a current collector substrate in an electrode of an alkaline secondary battery, which is advantageous not only in that it has excellent holding ability for a mixture for electrode, but also in that the utilization of an active material is improved, thereby enhancing the discharge characteristics of the battery, and an electrode and an alkaline secondary battery using the same. This current collector substrate has a plurality of openings formed within the medial surface of a metal powder sinter sheet which has a thickness (t) of 80 mum or less and is produced by a powdery calendering process, wherein the openings have periphery portions comprising burr portions protruding in the upper and down directions.