Negative electrode for lithium ion secondary battery and lithium ion secondary battery including the same

摘要

A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.

主权项

1. A negative electrode for a lithium ion secondary battery, comprising:
a multilayer film on a metal base, wherein the multilayer film includes a first non-porous layer on the metal base, a first porous layer on the first non-porous layer, a second non-porous layer on the first porous layer, the second non-porous layer including an alloy of Sn and Cu, a second porous layer on the second non-porous layer, and a third non-porous layer on the second porous layer, wherein each layer of the multilayer film includes metal containing particles, the metal containing particles of each layer being different from metal containing particles of the other layers.