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Title:
NEGATIVE ELECTRODE ZINC-CAN FOR DRY CELL, ITS MANUFACTURE, AND MANGANESE DRY CELL USING IT
Document Type and Number:
WIPO Patent Application WO/1995/029510
Kind Code:
A1
Abstract:
A negative electrode for dry cells made of a zinc-based alloy containing 0.004-0.800 wt. % of indium and 0.001-0.25 wt. % of titanium or 0.002-0.500 wt. % of zirconium and significantly containing no such harmful matters as mercury, cadmium, and lead. A method of manufacturing the zinc-can negative electrode by which up to 0.800 wt. % of indium can be added to a zinc-based alloy by hot rolling the alloy within a temperature range from 270 �C to 370�C. A manganese dry cell in which a separator coated with a paste containing 0.1-8 wt. % of InCl3 is provided on the internal surface of the zinc can. The zinc can is filled with an anode mixture prepared by adding manganese dioxide and a conductive carbon material such as of acetylene black to an electrolyte containing 35-50 wt. % of ZnCl2. A carbon rod is provided at the center of the anode mixture as a current collector.

Inventors:
NAKAGAWA YOSHITERU (JP)
NITTONO SHINJI (JP)
YASUMURA TAKAAKI (JP)
MURATA CHIHIRO (JP)
MATSUI KAZUO (JP)
NISHIDA KUNIYOSHI (JP)
MURAKOSHI MITUO (JP)
IZUMI AKIHIDE (JP)
Application Number:
PCT/JP1995/000845
Publication Date:
November 02, 1995
Filing Date:
April 27, 1995
Export Citation:
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Assignee:
FDK CORP (JP)
NAKAGAWA YOSHITERU (JP)
NITTONO SHINJI (JP)
YASUMURA TAKAAKI (JP)
MURATA CHIHIRO (JP)
MATSUI KAZUO (JP)
NISHIDA KUNIYOSHI (JP)
MURAKOSHI MITUO (JP)
IZUMI AKIHIDE (JP)
International Classes:
H01M4/42; H01M6/08; H01M6/10; H01M4/02; (IPC1-7): H01M4/06; H01M4/12
Foreign References:
JPH05125470A1993-05-21
JPS4915927A1974-02-12
JPS5590070A1980-07-08
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