Patent US4431719A successfully refreshed from Google Patents.
US4431719A
Expired / Lapsed
US
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Liquid cathode cell with cathode collector having recesses
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1982-08-31
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Granted: 1984-02-14
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Expires: 2002-08-31
Abstract
Abstract The invention relates to an electrochemical cell employing a cathode collector, an anode, a separator and an electrolyte containing a liquid active reducible cathode, and wherein recesses are provided on that surface of the cathode collector which faces the anode so as to improve access of liquid cathode to electrochemically active sites on and within the cathode collector.
Inventors
- 👤 Lewis F. Urry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:05
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; H01M4/02; H01M4/64; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
An electrochemical cell comprising a housing having a container and a cover, an anode disposed within said container, a cathode collector, a porous separator disposed between said anode and said cathode collector and an electrolyte containing a liquid active reducible cathode and a conductive solute disposed within said container; the improvement being a cathode collector having recesses on that surface of the cathode collector which faces the anode so as to permit liquid cathode to have improved access to reaction sites on and within said cathode collector.
Claim 2
Dependent Claim
87 words
An electrochemical cell comprising a housing having a container and a cover, an anode disposed within said container, a cathode collector, a porous separator disposed between said anode and said cathode collector and an electrolyte containing a liquid active reducible cathode and a conductive solute disposed within said container; the improvement being a cathode collector having recesses on that surface of the cathode collector which faces the anode so as to permit liquid cathode to have improved access to reaction sites on and within said cathode collector.
Claim 3
Dependent Claim
52 words
The electrochemical cell in accordance with claim 1 wherein said cathode collector comprises a carbonaceous material and a binder in an amount of between about 5% and 30% by weight of the collector, said binder selected from the group consisting of vinyl polymers, polyethylene, polypropylene, acrylic polymers, polystyrene, polytetrafluoroethylene and rubber elastomers.
Claim 4
Dependent Claim
17 words
The electrochemical cell in accordance with claim 1 wherein said cathode collector comprises acetylene black and polytetrafluoroethylene.
Claim 5
Dependent Claim
24 words
The electrochemical cell in accordance with claim 1 wherein said cathode collector is cylindrical and encompasses said separator and said anode of said cell.
Claim 6
Dependent Claim
18 words
The electrochemical cell in accordance with claim 4 wherein said recesses in said cathode collector comprise longitudinal slots.
Claim 7
Dependent Claim
48 words
The electrochemical cell in accordance with claim 1 or 5 wherein the recesses of said cathode collector have a projected facial area comprised from about five percent to about forty percent of the surface area of said cathode collector which surface area faces the anode of said cell.
Claim 8
Dependent Claim
48 words
The electrochemical cell in accordance with claims 1 or 5 wherein the recesses of said cathode collector have a projected facial area comprised from about five percent to about fifteen percent of the surface area of said cathode collector which surface area faces the anode of said cell.
Claim 9
Dependent Claim
27 words
The electrochemical cell of claim 1 wherein the electrolyte contains at least one oxyhalide of an element of Group V or Group VI of the Periodic Table.
Claim 10
Dependent Claim
27 words
The electrochemical cell of claim 1 wherein the electrolyte contains at least one halide of an element of Group IV to Group VI of the Periodic Table.
Claim 11
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfuryl chloride.
Claim 12
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is thionyl chloride.
Claim 13
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is phosphorus oxychloride.
Claim 14
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfur monochloride.
Claim 15
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is sulfur monobromide.
Claim 16
Dependent Claim
19 words
The electrochemical cell of claim 1 wherein the anode is lithium and the active reducible cathode is selenium tetrafluoride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |