DEGREASING METHOD OF ALUMINUM HARD FOIL, ALUMINUM HARD FOIL, ALUMINUM HARD FOIL ELECTRODE MATERIAL, AND LITHIUM ION SECONDARY BATTERY USING IT

摘要

PROBLEM TO BE SOLVED: To degrease aluminum hard foil without decreasing strength to enhance coating properties of a coating material.

SOLUTION: Degreasing is conducted by applying low temperature heat treatment keeping at 80-160°C for one hour or more to the aluminum hard foil after rolling. The low temperature heat treatment is preferably conducted by batch processing in a state that the foil is coiled.

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