US4060667A
Expired / Lapsed
US
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High temperature secondary batteries
Assignee: UK Secretary of State for Defence
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Filing: 1977-03-01
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Granted: 1977-11-29
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Expires: 1997-03-01
Abstract
Abstract The invention concerns a high temperature lithium-sulfur secondary battery, characterized in that the cathode pellet is made from titanium disulphide. An electrolyte pellet is preferably prepared from a mixture of alkali metal halides.
Inventors
- 👤 Barry Anthony Askew
- 👤 Ronald Holland
- 👤 Douglas Inman
- 👤 Yusuf Mohamed Faruq Marikar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M10/00; H01M10/36; H01M10/39; H01M10/399; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
89 words
In a high temperature lithium-sulphur secondary battery comprising a stack of cells, each cell including a pellet of electrolyte suitable for said secondary battery and sandwiched between a negative electrode pellet composed at least partially of lithium and a positive electrode pellet, and an intercell metal sheet adapted to prevent direct chemical action between the electrode pellets of adjacent cells while maintaining electrical contact between them, the improvement comprising using a positive electrode pellet composed substantially of titanium disulphide in combination with the components of said lithium-sulphur secondary battery.
Claim 2
Dependent Claim
89 words
In a high temperature lithium-sulphur secondary battery comprising a stack of cells, each cell including a pellet of electrolyte suitable for said secondary battery and sandwiched between a negative electrode pellet composed at least partially of lithium and a positive electrode pellet, and an intercell metal sheet adapted to prevent direct chemical action between the electrode pellets of adjacent cells while maintaining electrical contact between them, the improvement comprising using a positive electrode pellet composed substantially of titanium disulphide in combination with the components of said lithium-sulphur secondary battery.
Claim 3
Dependent Claim
52 words
A high temperature lithium-sulphur secondary battery according to claim 1 in which the stack of cells is encased in a close-fitting tube composed of material which is both electrically insulating at the battery operating temperature and chemically inert with respect to the materials from which the electrode and electrolyte pellets are prepared.
Claim 4
Dependent Claim
23 words
A high temperature lithium-sulphur secondary battery according to claim 1 in which the electrolyte is composed at least partially of a lithium halide.
Claim 5
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 1 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 6
Dependent Claim
19 words
A high temperature lithium-sulphur secondary battery according to claim 2 in which the tube is composed of lithium fluoride.
Claim 7
Dependent Claim
23 words
A high temperature lithium-sulphur secondary battery according to claim 2 in which the electrolyte is composed at least partially of a lithium halide.
Claim 8
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 2 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 9
Dependent Claim
23 words
A high temperature lithium-sulphur secondary battery according to claim 5 in which the electrolyte is composed at least partially of a lithium halide.
Claim 10
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 5 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 11
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 3 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 12
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 6 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 13
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 8 in which the electrolyte is immobilised by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 14
Dependent Claim
83 words
A high temperature lithium-sulphur secondary battery comprising a stack of cells, each cell including a pellet of electrolyte composed of a mixture of alkali metal halides at least one of which is a lithium salt, said electrolyte sandwiched between a negative electrode pellet composed at least partially of lithium and a positive electrode pellet composed substantially of titanium di-sulphide, and an intercell metal sheet adapted to prevent direct chemical action between the electrode pellets of adjacent cells while maintaining electrical contact between them.
Claim 15
Dependent Claim
83 words
A high temperature lithium-sulphur secondary battery comprising a stack of cells, each cell including a pellet of electrolyte composed of a mixture of alkali metal halides at least one of which is a lithium salt, said electrolyte sandwiched between a negative electrode pellet composed at least partially of lithium and a positive electrode pellet composed substantially of titanium di-sulphide, and an intercell metal sheet adapted to prevent direct chemical action between the electrode pellets of adjacent cells while maintaining electrical contact between them.
Claim 16
Dependent Claim
52 words
A high temperature lithium-sulphur secondary battery according to claim 13 in which the stack of cells is encased in a close-fitting tube composed of material which is both electrically insulating at the battery operating temperature and chemically inert with respect to the materials from which the electrode and electrolyte pellets are prepared.
Claim 17
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 13 in which the electrolyte is immobilized by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 18
Dependent Claim
19 words
A high temperature lithium-sulphur secondary battery according to claim 14 in which the tube is composed of lithium fluoride.
Claim 19
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 14 in which the electrolyte is immobilized by the addition of a finely divided, high melting point powder which is inert to the reactants.
Claim 20
Dependent Claim
33 words
A high temperature lithium-sulphur secondary battery according to claim 15 in which the electrolyte is immobilized by the addition of a finely divided, high melting point powder which is inert to the reactants.
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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |