| 摘要 |
PROBLEM TO BE SOLVED: To improve electrode strength while restraining the capacity lowering of an electrode, by joining the metallic base of two-dimensional structure to a multi-void metallic later, to form an current collector to fill a void in the multi-void metallic later with a mixture including battery active material. SOLUTION: In this secondary battery electrode, a current collector, to which the metallic base 1 of two-dimensional structure is joined, is quipped on a multi- void metallic layer 2 or 2 and 4; and voids in the metallic layers 2 and 4 are filled with mixtures including battery active material. The void ratio of the metallic layers 2 and 4 are preferably 85% or more. The base 1 is formed of metallic foil, and a metallic plate or a metallic boring plate. The metallic layers 2 and 4 or the base 1 is formed of stainless steel, nickel, aluminum, copper, or titanium. The elongation percentage of the electrode before and after press molding the electrode is 10% or less. |
