US3907597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous cell having an electrolyte containing sulfolane or an alkyl-substituted derivative thereof
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1974-09-27
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Granted: 1975-09-23
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Expires: 1994-09-27
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 sulfolane or its liquid alkyl-substituted derivatives in combination with a cosolvent, preferably a low viscosity cosolvent such as dioxolane, and an ionizing solute, such as LiClO4.
Inventors
- 👤 Geoffrey W Mellors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:42
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
AN NONAQUEOUS CELL COMPRISING A HIGHLY ACTIVE METAL ANODE SELECTED FROM THE GROUP CONSISTING OF LITHIUM, POTASSIUM, CALCIUM, MAGNESIUM, AND THEIR ALLOYS, S A SOLID CATHODE AND A NONAQUEOUS ELECTROLYTE CONSISTING ESSENTIALLY OF AT LEAST ONE SOLVENT SELECTED FROM THE GROUP CONSISTING OF SULFOLANE AND ITS LIQUID ALKUL-SUBSTITUTED DERIVATIVES THEREOF ESSENTIALLY FREE OF WATER, AT LEAST ONE LOW VISCOSITY ORGANIC COSOLVENT AND AN IONIZABLE SOLUTE.
Claim 2
Dependent Claim
65 words
AN NONAQUEOUS CELL COMPRISING A HIGHLY ACTIVE METAL ANODE SELECTED FROM THE GROUP CONSISTING OF LITHIUM, POTASSIUM, CALCIUM, MAGNESIUM, AND THEIR ALLOYS, S A SOLID CATHODE AND A NONAQUEOUS ELECTROLYTE CONSISTING ESSENTIALLY OF AT LEAST ONE SOLVENT SELECTED FROM THE GROUP CONSISTING OF SULFOLANE AND ITS LIQUID ALKUL-SUBSTITUTED DERIVATIVES THEREOF ESSENTIALLY FREE OF WATER, AT LEAST ONE LOW VISCOSITY ORGANIC COSOLVENT AND AN IONIZABLE SOLUTE.
Claim 3
Dependent Claim
23 words
The nonaqueous cell of claim 1 wherein said at least one solvent is selected from the group consisting of sulfolane and 3-methyl sulfolane.
Claim 4
Dependent Claim
37 words
The nonaqueous cell of claim 2 wherein said at least one low viscosity cosolvent is selected from the group consisting of tetrahydrofuran, dioxolane, dimethoxyethane, dimethyl isoxazole, diethyl carbonate, ethylene glycol sulfite, dioxane, dimethyl sulfite and gamma -butyrolactone.
Claim 5
Dependent Claim
32 words
The nonaqueous cell of claim 2 wherein the solute is selected from the group consisting of lithium aluminum tetrachloride, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium hexafluorophosphate, potassium hexafluoroarsenate, potassium hexafluorophosphate and lithium perchlorate.
Claim 6
Dependent Claim
33 words
The nonaqueous cell of claim 2 wherein the cathode is selected from the group consisting of (CFx)n, copper sulfide, copper oxide, manganese dioxide, lead dioxide, iron sulfide, copper chloride, silver chloride and sulfur.
Claim 7
Dependent Claim
29 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is (CFx)n, Said solvent is sulfolane, said cosolvent is dioxolane and said solute is lithium perchlorate.
Claim 8
Dependent Claim
30 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is (CFx)n, said solvent is 3-methyl sulfolane, said cosolvent is dioxolane and said solute is lithium perchlorate.
Claim 9
Dependent Claim
29 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is (CFx)n, said solvent is sulfolane, said cosolvent is dioxolane and said solute is potassium hexafluoroarsenate.
Claim 10
Dependent Claim
30 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is copper sulfide, said solvent is sulfolane, said cosolvent is dioxolane and said solute is lithium perchlorate.
Claim 11
Dependent Claim
31 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is copper sulfide, said solvent is sulfolane, said cosolvent is dioxolane and said solute is lithium aluminum tetrachloride.
Claim 12
Dependent Claim
30 words
The nonaqueous cell of claim 2 wherein said anode is lithium, said cathode is copper oxide, said solvent is sulfolane, said cosolvent is dioxolane and said solute is lithium perchlorate.
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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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |