MANUFACTURING METHOD OF ELECTROCHEMICAL CELL AND ELECTROCHEMICAL CELL ELECTRODE

摘要

PROBLEM TO BE SOLVED: To provide an electrode plate that does not generate winding slippage at winding and is not impaired in current collection at welding with the current collector in an electrochemical cell having a whirlpool shape electrode body of which electrode plate of the positive and negative electrodes is wound in a whirlpool shape and the electrode plates which are welded to the current collector. SOLUTION: At least one of the electrode plates has a core body which is provided with many punched holes nearly uniform on the total surface and active material is filled in the core body except for the one side of edge portion area along the long length direction, and the edge portion is installed with a conductive metal member of ribbon shape which is to be welded on the current collector.