US3953235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 09:54
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.
References Cited (Backward Citations)
US3514337A
Cited
US3806369A
Cited
US3567515A
Cited
US3639174A
Cited
US3796605A
Cited
US3796604A
Cited
US3773558A
Cited
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 |