CA1264804A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Alkaline primary battery containing coated current collector
Assignee: Spectrum Brands Inc
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Filing: 1985-08-20
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Granted: 1990-01-23
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Expires: 2005-08-20
Abstract
Abstract ABSTRACT The performance characteristics of alkaline primary batteries are improved by reducing the resistance between the cathode and the positive current collector. The resistance is reduced by applying a thin, non-continuous coating to the positive current collector. The reduction in resistance afforded by the coating is so dramatic that unplated steel can be used as the positive current collector.
Inventors
- 👤 Steven J. Hafner
- 👤 Gregory S. Kulibert
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M50/00; H01M50/10; H01M50/116; H01M50/121; H01M4/668; H01M4/669; H01M50/102; H01M50/107; H01M50/117; H01M50/119; H01M50/124; H01M50/1243; H01M50/131; H01M50/133; H01M50/50; H01M50/543; H01M50/552; H01M50/559; H01M50/56; H01M6/00; H01M6/04; H01M6/06; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
64 words
An alkaline electrochemical cell having a container which functions as a positive current collector, a cathode in contact with said container, an anode electrically connected to a negative current collector and separated from said cathode, and an alkaline electrolyte, wherein said container is formed of unplated steel at least partially coated with a conductive, alkali-resistant plastic coating on its surface which contacts said cathode.
Claim 2
Dependent Claim
64 words
An alkaline electrochemical cell having a container which functions as a positive current collector, a cathode in contact with said container, an anode electrically connected to a negative current collector and separated from said cathode, and an alkaline electrolyte, wherein said container is formed of unplated steel at least partially coated with a conductive, alkali-resistant plastic coating on its surface which contacts said cathode.
Claim 3
Dependent Claim
14 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating contains carbon.
Claim 4
Dependent Claim
23 words
An alkaline electrochemical cell as in Claim 2, wherein carbon comprises between 20 weight percent and 40 weight percent of said plastic coating.
Claim 5
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating does not dissolve in said alkaline electrolyte.
Claim 6
Dependent Claim
21 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating is not hydrolyzed or oxidized by said alkaline electrolyte.
Claim 7
Dependent Claim
52 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating is derived from an organic binder selected from the group consisting of ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride), epoxies, fluorucarbons, nylons, polypropylene, polybutylene, polystyrenes, neoprenes, isobutylene, isoprene, chloroprene, polysulfide, ethylene propylene, chlorinated and chlorosulfonated polyethylene, fluorosilicone and propylene oxide.
Claim 8
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating is 0.0001 inches to 0.002 inches thick.
Claim 9
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 7, wherein said plastic coating is 0.0006 inches to 0.008 inches thick.
Claim 10
Dependent Claim
20 words
An alkaline electrochemical cell as in Claim 1, wherein said plastic coating is discontinuous on the surface of said container.
Claim 11
Dependent Claim
28 words
An alkaline electrochemical cell as in Claim 1 or 9, wherein said plastic coating covers between 25 percent and 75 percent of the surface area of said container.
Claim 12
Dependent Claim
20 words
An alkaline electrochemical cell as in Claim 1, wherein said cathode is comprised of manganese dioxide and a carbon-containing material.
Claim 13
Dependent Claim
15 words
An alkaline electrochemical cell as in Claim 1, wherein said cell is of cylindrical configuration.
Claim 14
Dependent Claim
19 words
An alkaline electrochemical cell of Claim 1, wherein said plastic coating does not provide said container with structural integrity.
Claim 15
Dependent Claim
64 words
An alkaline electrochemical cell having a cathode mix, an anode separated from said cathode mix, an electrolyte included in said anode, and a metal container which holds said cathode mix, anode and electrolyte, and functions as a positive current collector, wherein internal cell resistivity is decreased by coating the surface of said container which contacts said cathode mix with a conductive, alkali-resistant plastic coating.
Claim 16
Dependent Claim
64 words
An alkaline electrochemical cell having a cathode mix, an anode separated from said cathode mix, an electrolyte included in said anode, and a metal container which holds said cathode mix, anode and electrolyte, and functions as a positive current collector, wherein internal cell resistivity is decreased by coating the surface of said container which contacts said cathode mix with a conductive, alkali-resistant plastic coating.
Claim 17
Dependent Claim
18 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating contains at least one conductive filler.
Claim 18
Dependent Claim
14 words
An alkaline electrochemical cell as in Claim 15, wherein said conductive filler is carbon.
Claim 19
Dependent Claim
23 words
An alkaline electrochemical cell as in Claim 16, wherein the weight percent of carbon in said plastic coating ranges from 20 to 40.
Claim 20
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating does not dissolve in said alkaline electrolyte.
Claim 21
Dependent Claim
21 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating is not hydrolyzed or oxidized by said alkaline electrolyte.
Claim 22
Dependent Claim
17 words
An alkaline electrochemical cell as in Claim 14, wherein said metal container is formed of unplated steel.
Claim 23
Dependent Claim
52 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating is derived from an organic binder selected from the group consisting of ABS (acrylonitrile butadiene styrene), PVC (polyvinyl chloride), epoxies, fluorocarbons, nylons, polypropylene, polybutylene, polystyrenes, neoprenes, isobutylenes, isoprene, chloroprene, polysulfide, ethylene propylene, chlorinated and chlorosulfonated polyethylene, fluorosilicone and propylene oxide.
Claim 24
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating is 0.0001 inches to 0.002 inches thick.
Claim 25
Dependent Claim
19 words
An alkaline electrochemical cell as in Claim 22, wherein said plastic coating is 0.0006 inches to 0.008 inches thick.
Claim 26
Dependent Claim
14 words
An alkaline electrochemical cell as in Claim 14, wherein said plastic coating is discontinuous.
Claim 27
Dependent Claim
29 words
An alkaline electrochemical cell as in Claim 24, wherein said plastic coating covers between 2.5 percent and 75 percent of the internal surface area of said positive current collector.
Claim 28
Dependent Claim
17 words
An alkaline electrochemical cell as in Claim 14, wherein said cathode mix consists of cathode preformed rings.
Claim 29
Dependent Claim
23 words
An alkaline electrochemical cell as in Claim 26, wherein said cathode preformed rings are in a friction fit with the positive current collector.
Claim 30
Dependent Claim
13 words
An alkaline electrochemical cell as in Claim 14, wherein said cell is cylindrical.
Claim 31
Dependent Claim
16 words
An alkaline electrochemical cell as in Claim 14, wherein said cell is a manganese dioxide/zinc cell.
References Cited (Backward Citations)
No citation records indexed.
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