US4513067A
Expired / Lapsed
US
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Inorganic non-aqueous cell
Assignee: Duracell Inc USA
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Filing: 1983-06-30
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Granted: 1985-04-23
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Expires: 2003-06-30
Abstract
Abstract A novel inorganic non-aqueous electrochemical cell having an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an SO 2 solvent with an alkali or alkaline earth metal halide salt of aluminum, tantalum niobium or antimony, dissolved in the SO 2 and a cathode comprised of a carbonaceous material having an apparent bulk density in excess of 5 lb/ft 3 (80 gm/l). Lower bulk density carbonaceous material may, however, be used in electrolytes having high salt concentrations. Ketjenblack EC (furnace black) carbonaceous material may be admixed with a solid cathode active material which is substantially insoluble in the SO 2 electrolyte to provide a high primary cell capacity and an effectively rechargeable cell. There is no SO 2 per se discharge in the cell.
Inventors
- 👤 Han C. Kuo
- 👤 Donald L. Foster
- 👤 Carl R. Schlaikjer
- 👤 Mysore L. Gopikanth
- 👤 Arabinda N. Dey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:50
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0561; H01M10/0563; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/661; H01M4/663; H01M4/86; H01M4/96; H01M6/00; H01M6/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
75 words
A non-aqueous, electrochemical cell comprising an anode comprised of an alkali or alkaline earth metal, an inorganic electrolyte comprised of SO 2 having dissolved therein an alkali or alkaline earth metal halide salt containing aluminum, tantalum, niobium or antimony whereby said SO 2 per se is not a cathode active material characterized in that said cell contains a cathode comprised of a conductive carbonaceous material having an apparent bulk density in excess of 80 gm/liter.
Claim 2
Dependent Claim
75 words
A non-aqueous, electrochemical cell comprising an anode comprised of an alkali or alkaline earth metal, an inorganic electrolyte comprised of SO 2 having dissolved therein an alkali or alkaline earth metal halide salt containing aluminum, tantalum, niobium or antimony whereby said SO 2 per se is not a cathode active material characterized in that said cell contains a cathode comprised of a conductive carbonaceous material having an apparent bulk density in excess of 80 gm/liter.
Claim 3
Dependent Claim
11 words
The cell of claim 1 wherein said carbonaceous material is graphite.
Claim 4
Dependent Claim
21 words
The cell of claim 1 wherein said carbonaceous material is Ketjenblack EC and said cathode consists essentially of said Ketjenblack EC.
Claim 5
Dependent Claim
22 words
The cell of claim 1 wherein said carbonaceous material is Ketjenblack EC and said cathode further contains a solid active cathode material.
Claim 6
Dependent Claim
28 words
The cell of claim 4 wherein said solid active cathode material is selected from the group consisting of metal and non-metal halides, metal oxides, oxyhalides and metal chalcogenides.
Claim 7
Dependent Claim
65 words
The cell of claim 4 wherein said solid cathode active material is selected from the group consisting of AgCl, AgBr, NiCl 2 , CoCl 2 , NiF 2 , CrCl 3 , MnCl 2 , MoCl 3 , FeCl 2 , PbCl 2 , MoO 2 Cl 2 , SnCl 2 , CuCl, FeBr 3 , MnF 2 , CuCl 2 and CuBr 2 .
Claim 8
Dependent Claim
39 words
The cell of claim 6 wherein said metal halide salt contains an anion selected from the group consisting of AlCl 4 - , TaCl 6 - , NbCl 6 - , SbCl 6 -1 and SbCl 6 -3 .
Claim 9
Dependent Claim
22 words
The cell of claim 7 wherein the mole equivalent ratio of said salt to said SO 2 is not greater than 1:7.
Claim 10
Dependent Claim
14 words
The cell of claim 6 wherein said metal halide salt is LiAlCl 4 .
Claim 11
Dependent Claim
12 words
The cell of claim 8 wherein said anode is comprised of lithium.
Claim 12
Dependent Claim
80 words
A non-aqueous, electrochemical cell comprising an anode comprised of an alkali or alkaline earth metal, an inorganic electrolyte comprised of SO 2 with an alkali or alkaline earth metal halide salt containing aluminum, tantalum, niobium or antimony with the mole equivalent ratio of said salt to said SO 2 being no more than 1:7 whereby said SO 2 per se is not a cathode active material, characterized in that said cell contains a cathode comprised of a conductive carbonaceous material.
Claim 13
Dependent Claim
80 words
A non-aqueous, electrochemical cell comprising an anode comprised of an alkali or alkaline earth metal, an inorganic electrolyte comprised of SO 2 with an alkali or alkaline earth metal halide salt containing aluminum, tantalum, niobium or antimony with the mole equivalent ratio of said salt to said SO 2 being no more than 1:7 whereby said SO 2 per se is not a cathode active material, characterized in that said cell contains a cathode comprised of a conductive carbonaceous material.
Claim 14
Dependent Claim
12 words
The cell of claim 11 wherein said carbonaceous material is acetylene black.
Claim 15
Dependent Claim
11 words
The cell of claim 11 wherein said carbonaceous material is graphite.
Claim 16
Dependent Claim
21 words
The cell of claim 11 wherein said carbonaceous material is Ketjenblack EC and said cathode consists essentially of said Ketjenblack EC.
Claim 17
Dependent Claim
22 words
The cell of claim 11 wherein said carbonaceous material is Ketjenblack EC and said cathode further contains a solid active cathode material.
Claim 18
Dependent Claim
27 words
The cell of claim 15 wherein said active cathode material are selected from the group consisting of metal and non-metal halides, metal oxides, oxyhalides, and metal chalcogenides.
Claim 19
Dependent Claim
65 words
The cell of claim 15 wherein said active cathode material is selected from the group consisting of AgCl, AgBr, NiCl 2 , CoCl 2 , NiF 2 , CrCl 3 , MnCl 2 , MoCl 3 , FeCl 2 , PbCl 2 , MoO 2 Cl 2 , SnCl 2 , CuCl, FeBr 3 , MnF 2 , CuCl 2 , and CuBr 2 .
Claim 20
Dependent Claim
87 words
A non-aqueous, electrochemical cell comprising an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an SO 2 solvent having dissolved therein a salt having at least one alkali or alkaline earth metal cation and an anion containing at least one halogen atom and at least one member of the group consisting of aluminum, niobium, tantalum and antimony whereby said SO 2 per se is not a cathode active material, and a cathode comprising Ketjenblack EC carbon black admixed with a solid cathode active material.
Claim 21
Dependent Claim
87 words
A non-aqueous, electrochemical cell comprising an alkali or alkaline earth metal anode, an inorganic electrolyte comprised of an SO 2 solvent having dissolved therein a salt having at least one alkali or alkaline earth metal cation and an anion containing at least one halogen atom and at least one member of the group consisting of aluminum, niobium, tantalum and antimony whereby said SO 2 per se is not a cathode active material, and a cathode comprising Ketjenblack EC carbon black admixed with a solid cathode active material.
Claim 22
Dependent Claim
22 words
The cell of claim 18 wherein the mole equivalent ratio of said salt to said SO 2 is no greater than 1:7.
Claim 23
Dependent Claim
27 words
A solvent-electrolyte system comprising a salt selected from the group consisting of alkali or alkaline earth metal tantalate, niobate, and antimonate chlorides dissolved in SO 2 .
Claim 24
Dependent Claim
27 words
A solvent-electrolyte system comprising a salt selected from the group consisting of alkali or alkaline earth metal tantalate, niobate, and antimonate chlorides dissolved in SO 2 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |