| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an anode capable of sufficiently securing safety by suppressing the quick go-in/go-out of lithium ions in quick charge discharge when used as the anode of the lithium ion secondary battery. <P>SOLUTION: The anode of the lithium ion secondary battery has a current collector 16 and an active material-containing layer 18 formed on the current collector 16, the active material-containing layer 18 is composed of the outermost surface layer 19 arranged on the most distant side from the current collector 16 and a lower side layer 17 comprising one or more layers arranged between the outermost surface layer 19 and the current collector 16, and the curvature of the outermost surface layer 19 is larger than that of the lower side layer 17. <P>COPYRIGHT: (C)2009,JPO&INPIT |
