| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide means capable of preventing decrease in volume energy density, minimizing the generation of wrinkles in a current collector, and enhancing adhesion between an active material layer and the current collector, in a nonaqueous solvent secondary battery. <P>SOLUTION: A current collector for the nonaqueous solvent secondary battery, which includes a first metal layer; and a second metal layer stacked on the surface of the first metal layer, is constituted so that a Young's modulus (E1), Vickers hardness (Hv1) and thickness (T1) of the first metal layer and a Young's modulus (E2), Vickers hardness (Hv2) and thickness (T2) of the second metal layer can satisfy the following expression: E1>E2 or Hv1>Hv2, as well as, T1<T2. <P>COPYRIGHT: (C)2009,JPO&INPIT |
