MANUFACTURE OF NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Japanese Patent JPS6049574

A

PURPOSE: To suppress gas evolution during charge-discharge by melting alloy which stores an alkali metal ion during charge and releases it during discharge, and degassing it in a vaccum, and cooling it and press-bonding it with llthium to form a negative electrode.

CONSTITUTION: Woods metal 2 comprising 50wt% Bi, 12.5wt% Cd, 25wt% Pb, and 12.5wt% Sn is melted in an iron mold 1 place on a hot plate 3 and is degassed in a vacuum by using a suction bell jar 4, then rolled in a uniform thickness with a roller and cooled to form an alloy electrode. Neckel expanded metal is pressed on its both sides to form an electrode plate, then lithium sheet is press- bonded to form a negative electrode for a nonaqueous electrolyte secondary battery. Since air contained in the electrod plate, which causes gas evolution during charge-discharge, is removed in a vacuum, charge-discharge performance is stabilized.

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YAMAURA JIYUNICHI
MATSUI TOORU
NANKAI SHIROU
TOYOGUCHI YOSHINORI
IIJIMA TAKASHI

JP15833883A

March 18, 1985

August 29, 1983

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MATSUSHITA ELECTRIC IND CO LTD

H01M4/1395; H01M4/66; H01M4/74; (IPC1-7): H01M10/40

Toshio Nakao

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