Current collector for nonaqueous solvent secondary battery, and electrode and battery, which use the current collector

摘要

A current collector for a nonaqueous solvent secondary battery, which includes: a first metal layer; and a second metal layer stacked on a surface of the first metal layer, is composed 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); and T1

主权项

1. An electrode for a nonaqueous solvent secondary battery, comprising:
a current collector; and an active material layer formed on a surface of the current collector, wherein the current collector comprises:
a first metal layer;a second metal layer positioned directly in contact with a first surface of the first metal layer; anda third metal layer composed of the same metal as the metal composing the second metal layer, and positioned directly in contact with a second surface opposite to the first surface of the first metal layer, wherein Young's modulus (E1, E2) of respective metals comprising the first metal layer and the second metal layer and respective thicknesses (T1, T2) of the first metal layer and the second metal layer satisfy following Expression:
E1>E2; and T1(iii) 1<(T2/T1)≦5.