US4167458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium ion-containing organic electrolyte
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1978-03-28
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Granted: 1979-09-11
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Expires: 1998-03-28
Abstract
Abstract A lithium ion-containing solvent-electrolyte suitable for the electrodeposition of lithium in electrochemical cells, said electrolyte comprising lithium fluoroborate dissolved in a mixture of methylene chloride and sulfolane and/or the alkyl-substituted derivatives thereof.
Inventors
- 👤 Demetrios V. Louzos
- 👤 Ralph J. Brodd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:54
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/54
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
42 words
A solvent-electrolyte for use in a lithium electrodeposition process comprising an ionizable solute of lithium fluoroborate dissolved in a solvent mixture of methylene chloride and at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof.
Claim 2
Dependent Claim
42 words
A solvent-electrolyte for use in a lithium electrodeposition process comprising an ionizable solute of lithium fluoroborate dissolved in a solvent mixture of methylene chloride and at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof.
Claim 3
Dependent Claim
39 words
The solvent-electrolyte of claim 1 wherein said lithium fluoroborate is present in a concentration of about 3 percent by weight based on the weight of the solvent mixture up to saturation of the lithium fluoroborate in the solvent mixture.
Claim 4
Dependent Claim
38 words
The solvent-electrolyte of claim 1 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof is between about 20 and about 80 volume percent of the electrolyte solvent mixture.
Claim 5
Dependent Claim
37 words
The solvent-electrolyte of claim 2 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivative thereof is betwen about 20 and about 80 volume percent of electrolyte solvent mixture.
Claim 6
Dependent Claim
38 words
The solvent-electrolyte of claim 4 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof is between about 50 and about 60 volume percent of the electrolyte solvent mixture.
Claim 7
Dependent Claim
48 words
A process for electrodeposition of lithium from a nonaqueous electrolyte wherein said electrodeposition is carried out with an electrolyte of lithium fluoroborate dissolved in a solvent mixture of methylene chloride and at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof.
Claim 8
Dependent Claim
48 words
A process for electrodeposition of lithium from a nonaqueous electrolyte wherein said electrodeposition is carried out with an electrolyte of lithium fluoroborate dissolved in a solvent mixture of methylene chloride and at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof.
Claim 9
Dependent Claim
39 words
The process of claim 6 wherein said lithium fluoroborate is present in a concentration of about 3 percent by weight based on the weight of the solvent mixture up to saturation of the lithium fluoroborate in the solvent mixture.
Claim 10
Dependent Claim
38 words
The process of claim 6 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof is between about 20 and about 80 volume percent of the electrolyte solvent mixture.
Claim 11
Dependent Claim
38 words
The process of claim 7 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof is between about 20 and about 80 volume percent of the electrolyte solvent mixture.
Claim 12
Dependent Claim
38 words
The process of claim 9 wherein the at least one additional solvent selected from the group consisting of sulfolane and the alkyl-substituted derivatives thereof is between about 50 and about 60 volume percent of the electrolyte solvent mixture.
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) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |