Title:
ZINC/AIR CELL
Document Type and Number:
WIPO Patent Application WO2002084761
Kind Code:
A3
Abstract:
A zinc/air button cell comprising a cathode casing and an anode casing wherein the anode casing is inserted into the cathode casing. The anode casing is formed of multiclad metal layers, for example nickel/stainless steel/copper. A protective metal is plated onto the exposed peripheral edge of the anode casing. The protective metal is desirably selected from copper, tin, indium, silver, brass, bronze, phosphor bronze, silicon bronze, tin-lead alloy or gold. The application of the protective metal covers the multiclad metals exposed along the peripheral edge surface. The protective metal is also desirably plated onto the portion of the outside surface of the anode casing abutting the insulating material placed between the anode and cathode casing. Application of the protective metal to the anode casing peripheral edge eliminates the potential gradients caused by exposure of the different metals comprising the multiclad material. This reduces the chance of electrolyte leakage which can be promoted by secondary reactions occurring along the anode casing peripheral edge.
Inventors:
RAMASWAMI KARTHIK (US)
GIBBONS DANIEL (US)
BUCKLE KEITH (US)
GIBBONS DANIEL (US)
BUCKLE KEITH (US)
Application Number:
PCT/US2002/010956
Publication Date:
April 08, 2004
Filing Date:
April 09, 2002
Export Citation:
Assignee:
GILLETTE CO (US)
RAMASWAMI KARTHIK (US)
GIBBONS DANIEL (US)
BUCKLE KEITH (US)
RAMASWAMI KARTHIK (US)
GIBBONS DANIEL (US)
BUCKLE KEITH (US)
International Classes:
B22F1/00; C22C18/00; H01M4/42; H01M4/90; H01M12/06; H01M50/119; H01M50/128; H01M50/133; H01M50/145; H01M50/188; (IPC1-7): H01M12/06; H01M2/02
Foreign References:
| EP0731516A1 | 1996-09-11 | |||
| US4128705A | 1978-12-05 | |||
| DE3133599A1 | 1983-03-10 | |||
| US4364800A | 1982-12-21 | |||
| EP1028480A2 | 2000-08-16 | |||
| US5306580A | 1994-04-26 | |||
| US4192723A | 1980-03-11 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 004, no. 083 (E - 015) 14 June 1980 (1980-06-14)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29)
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