COLLECTOR FOR LITHIUM ION BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a collector for lithium ion battery in which a collection layer maintains an excellent recycling property without separating and dropping from a film base material and an active material layer even after repeated charge and discharge operations, and that is excellent in power collection efficiency and electric insulation.

SOLUTION: In a collector for lithium ion battery comprising a film base material composed of a resin composition and a collection layer composed of a thin layer that is formed by vapor deposition of copper or aluminium on a single side or both sides of the film base material, the portion constituting the electrode extraction side is formed thicker than other thin film portions.

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