Patent US3953235A successfully refreshed from Google Patents.
US3953235A
Expired / Lapsed
US
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Nonaqueous cell having an electrolyte containing crotonitrile
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1974-12-23
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Granted: 1976-04-27
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Expires: 1994-12-23
Abstract
Abstract A nonaqueous cell utilizing a highly active metal anode, such as lithium, a solid cathode, such as (CFx)n, copper sulfide or the like, and a liquid organic electrolyte consisting essentially of crotonitrile in combination with a protective cosolvent, preferably propylene carbonate, and an ionizable solute, such as LiClO4.
Inventors
- 👤 George E. Blomgren
- 👤 Gerald H. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
A nonaqueous cell comprising a highly active metal anode selected from the group consisting of lithium, sodium, potassium, calcium, magnesium and their alloys, a solid cathode and a nonaqueous electrolyte comprising crotonitrile, at least one cosolvent selected from the group consisting of propylene carbonate, ethylene carbonate, γ-butyrolactone, nitrobenzene, methyl acetate, sulfolane, 3-methyl sulfolane, methyl formate, dimethyl sulfoxide, propylene glycol sulfite and diethyl sulfite, and an ionizable solute.
Claim 2
Dependent Claim
67 words
A nonaqueous cell comprising a highly active metal anode selected from the group consisting of lithium, sodium, potassium, calcium, magnesium and their alloys, a solid cathode and a nonaqueous electrolyte comprising crotonitrile, at least one cosolvent selected from the group consisting of propylene carbonate, ethylene carbonate, γ-butyrolactone, nitrobenzene, methyl acetate, sulfolane, 3-methyl sulfolane, methyl formate, dimethyl sulfoxide, propylene glycol sulfite and diethyl sulfite, and an ionizable solute.
Claim 3
Dependent Claim
12 words
The nonaqueous cell of claim 1 wherein said cosolvent is propylene carbonate.
Claim 4
Dependent Claim
40 words
The nonaqueous cell of claim 1 wherein the solid cathode is selected from the group consisting of (CF x ) n , copper sulfide, nickel fluoride, copper oxide, manganese dioxide, lead dioxide, iron sulfide, copper chloride, silver chloride and sulfur.
Claim 5
Dependent Claim
27 words
The nonaqueous cell of claim 1 wherein said electrolyte contains a low viscosity cosolvent selected from the group consisting of tetrahydrofuran, dioxolane, dimethoxyethane, dimethyl isoxazole and dioxane.
Claim 6
Dependent Claim
30 words
The nonaqueous cell of claim 1 wherein the solute is selected from the group consisting of lithium aluminum tetrachloride, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium hexafluorophosphate, potassium hexafluoroarsenate and lithium perchlorate.
Claim 7
Dependent Claim
24 words
The nonaqueous cell of claim 1 wherein said anode is lithium, said cathode is (CF x ) n and said cosolvent is propylene carbonate.
Claim 8
Dependent Claim
22 words
The nonaqueous cell of claim 1 wherein said anode is lithium, said cathode is copper sulfide and said cosolvent is propylene carbonate.
Claim 9
Dependent Claim
22 words
The nonaqueous cell of claim 1 wherein said anode is lithium, said cathode is nickel fluoride and said cosolvent is propylene carbonate.
Claim 10
Dependent Claim
22 words
The nonaqueous cell of claim 1 wherein said anode is lithium, said cathode is copper oxide and said cosolvent is propylene carbonate.
Claim 11
Dependent Claim
22 words
The nonaqueous cell of claim 1 wherein said anode is lithium, said cathode is silver chloride and said cosolvent is propylene carbonate.
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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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |