PURPOSE: To increase charge-discharge performance by applying silver plating to the portion where lithium is electrolytically deposited on the stainless steel surface of a negative current collector.
CONSTITUTION: Lithium or lithium alloy with aluminium, mercury, zinc, or cadmium is used as a negative active material. For example, for a button battery, silver plating is applied to a negative can 2 and a negative current collecting net 3, and for a cylindrical battery, silver plating is applied to a negative can, a negative current collecting net, and negative current collecting rod. In this way, according to the battery construction, silver plating is performed in the portion where electrolytically deposited lithium is in contact with the negative current collector. Thereby, decrease of charge-discharge reversibility is suppressed.
KOTANI NOBORU
KAJITA KOUZOU
MANABE TOSHIKATSU
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