| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a collector used for an electrode of a lithium ion secondary battery, capable of preventing occurrence of buckling caused by expansion/contraction generated in a charge-discharge cycle, easily manufacturable, having high capacity and excelling in a charge-discharge cycle characteristic; and to provide a battery. <P>SOLUTION: This collector having a plurality of sheet-like thin films 11 having conductivity and stacked in the thickness direction and an intermediate layer 13 located between the plurality of stacked sheet-like thin films 11 and mutually dissolving with the solvent of an electrolyte is formed. By mutually dissolving the intermediate layer 13 with the electrolyte, negative electrode active materials 12 become spaces for absorbing expansion or contraction, whereby the electrode 1 capable of suppressing deterioration, having high capacity and excelling in a charge-discharge characteristic and this lithium ion secondary battery using it can be provided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
