| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thin film electrode having high elasticity, hardly generating swelling of an electrode, wrinkling of a current collector and a crack in an activator thin film, and manufacturing method of the same, and to provide a lithium secondary battery using the thin film electrode with high capacity, cycle property and rate property. <P>SOLUTION: The thin film electrode 1 comprises a current collector 2 made of metal not alloying with lithium, and a thin film 3 formed on the current collector 2, containing an element alloying with lithium, having porosity of not less than 1% and not more than 40%. The manufacturing method of the thin film electrode comprises a process of forming the thin film 3 containing an element alloying with lithium and a blowing agent on the surface of the current collector 2 made of metal not alloying with lithium, by an electroplating method, and a process of forming the thin film 3 so as to have a porosity of not less than 1% and not more than 40% by removing the blowing agent in the thin film 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
