US4284692A
Expired / Lapsed
US
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Compositions for stabilizing electrolytes in Li/TiS2 systems
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-04-28
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Granted: 1981-08-18
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Expires: 2000-04-28
Abstract
Abstract A current producing Li/TiS2 electrochemical cell is featured which has a cyclic ether-containing electrolyte, and an inhibitor against the polymerization of the cyclic ether by TiS2, which cyclic ether otherwise polymerizes in the presence of TiS2.
Inventors
- 👤 Bhaskara M. L. Rao
- 👤 Daniel J. Eustace
- 👤 Dan Farcasiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:02
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/168; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
89 words
In a current producing Li/TiS 2 electrochemical cell having an electrolyte containing at least one lithium salt solute in a solvent comprising a cyclic ether, at least one composition for inhibiting polymerization of said cyclic ether by TiS 2 , said composition being selected from a group consisting essentially of at least one of the following: (a) Li x TiS 2 where: x is less than approximately 0.1 and greater than approximately 0.025; and (b) at least one sterically hindered amine which does not intercalate with TiS 2 .
Claim 2
Dependent Claim
89 words
In a current producing Li/TiS 2 electrochemical cell having an electrolyte containing at least one lithium salt solute in a solvent comprising a cyclic ether, at least one composition for inhibiting polymerization of said cyclic ether by TiS 2 , said composition being selected from a group consisting essentially of at least one of the following: (a) Li x TiS 2 where: x is less than approximately 0.1 and greater than approximately 0.025; and (b) at least one sterically hindered amine which does not intercalate with TiS 2 .
Claim 3
Dependent Claim
24 words
In the current producing Li/TiS 2 electrochemical cell of claim 1, the composition wherein one of said sterically hindered amines comprises 1,8-bis (dimethylamino-) naphthalene.
Claim 4
Dependent Claim
23 words
In the current producing Li/TiS 2 electrochemical cell of claim 1, the composition wherein one of said sterically hindered amines comprises 2,2,6,6-tetramethyl piperidine.
Claim 5
Dependent Claim
32 words
In the current producing Li/TiS 2 electrochemical cell of claim 1, the composition wherein one of said polymeric amines comprises a polymeric pyridine, such as: polyvinylpyridine or copolymers of vinylpyridine with styrene.
Claim 6
Dependent Claim
22 words
In the current producing Li/TiS 2 electrochemical cell of claim 1, the composition wherein one of said sterically hindered amines comprises tetramethylethylenediamine.
Claim 7
Dependent Claim
57 words
In the current producing cell of claims 1, 2, 3, 4 or 5 wherein said electrolyte contains at least one lithium salt solute of the general formula: LiXF a where: "X" is selected from a group consisting of B, P, Sb and As, and wherein "a" is 4 for B and 6 for P, Sb and As.
Claim 8
Dependent Claim
20 words
In the current producing cell of claim 6, wherein one of said solutes is preferably LiA s F 6 .
Claim 9
Dependent Claim
25 words
In the current producing cell of claims 1, 2, 3, 4, 5 or 6, wherein said dioxolane is a cosolvent with dimethoxyethane in said electrolyte.
Claim 10
Dependent Claim
32 words
In the current producing cell of claim 8, wherein said dioxolane is in mixture with said dimethoxyethane in a range of ratios of dioxolane: dimethoxyethane from 100% to 40/60 percent by weight.
Claim 11
Dependent Claim
13 words
In the current producing cell of claim 1, wherein said cell is rechargeable.
Claim 12
Dependent Claim
16 words
In the current producing cell of claim 1, wherein said cell is a secondary battery cell.
Claim 13
Dependent Claim
27 words
In the current producing Li/TiS 2 electrochemical cell of claim 1, wherein said cell comprises a cathode, said cathode containing at least one of said inhibitor compositions.
References Cited (Backward Citations)
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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) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |