Metal porous body and making methd thereof, current collector for cell having same


Application Number: 00108557
Application Date: 2000.05.16
Publication Number: 1275819
Publication Date: 2000.12.06
Priority Information: 1999/5/26 JP 147154/99
International: H01M4/64
Applicant(s) Name: Sumitomo Electric Industry Ltd.
Address:
Inventor(s) Name: Kariya Saise;Hayashi Kenki;Inasawa Shinji
Patent Agency Code: 11105
Patent Agent: li xiaoshu
Abstract The metallic porous body is composed of a metallic framework having a three-dimensional network with a continuous-pore structure formed by linking substantially polyhedral cells. The substantially polyhedral cells have an average cell diameter of 200 to 300 m and an average window diameter of 100 to 200 m. The metallic porous body can be obtained by the following method, for instance: First, a plastic porous body is provided that has an average cell diameter of 200 to 300 m and an average window diameter of 100 to 200 m. Second, a conductive layer is formed on the surface of the framework of the plastic porous body to produce a conductive porous body having a resistivity of 1 k CR m or less. Finally, a continuous metalplated layer is formed on the surface of the conductive layer by electroplating, with the conductive porous body serving as the cathode. The above-mentioned current collector is provided by filling an active material into the pores of the metallic porous body.