| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode material for a secondary battery capable of improving battery characteristics and having high economical efficiency. <P>SOLUTION: A three-dimensional structure is formed in such a way that a steel plate (foil) or a copper plate (foil) is punched, nickel-plated, press-formed to form protrusions on the surface, embossed for example, and a cleavage is formed in a foot part thereof if necessary. <P>COPYRIGHT: (C)2004,JPO |
