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US4194062A
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Rechargeable dichalcogenide cell
Assignee: AT&T Inc
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Filing: 1978-07-27
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Granted: 1980-03-18
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Expires: 1998-07-27
Abstract
Abstract A nonaqueous secondary cell having a positive electrode and a negative electrode at least one of which contains a layered chalcogenide having the nominal atom composition Li y MX 2 where M is at least one member selected from the group consisting of V and Ti, X is at least one member selected from the group consisting of S and Se and y is greater than or equal to 1.0 and less than or equal to 2.0.
Inventors
- 👤 James N. Carides
- 👤 Donald W. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M10/00; H01M10/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
A nonaqueous secondary cell comprising a negative electrode, an electrolyte, and a positive electrode, CHARACTERIZED IN THAT at least one of said negative electrode and said positive electrode consists essentially of a first layered chalcogenide having the nominal atom composition Li y MX 2 , where M is at least one member selected from the group consisting of V and Ti, X is at least one member selected from the group consisting of S and Se and y is greater than 1.0 and less than or equal to 2.0.
Claim 2
Dependent Claim
89 words
A nonaqueous secondary cell comprising a negative electrode, an electrolyte, and a positive electrode, CHARACTERIZED IN THAT at least one of said negative electrode and said positive electrode consists essentially of a first layered chalcogenide having the nominal atom composition Li y MX 2 , where M is at least one member selected from the group consisting of V and Ti, X is at least one member selected from the group consisting of S and Se and y is greater than 1.0 and less than or equal to 2.0.
Claim 3
Dependent Claim
86 words
A cell as recited in claim 1 in which said negative electrode consists of said first layered chalcogenide; and said positive electrode consists essentially of a second layered chalcogenide having the nominal atom composition Li z AB 2 ; A being at least one member selected from the group consisting of V, Cr and Ti; B being at least one member selected from the group consisting of S and Se; and z being greater than or equal to 0.0 and less than or equal to 1.0.
Claim 4
Dependent Claim
109 words
A cell as recited in claim 1 in which said negative electrode consists of said first layered chalcogenide; and said positive electrode consists of at least one member selected from the group consisting of Li z VS 2 ; Li z VSe 2 ; Li z TiS 2 ; Li z TiSe 2 ; Li z Fe x V 1-x S 2 , x greater than or equal to 0.0 and less than 0.5; and Li z Cr x V 1-x S 2 , x greater than or equal to 0.0 and less than 1.0; z greater than or equal to 0.0 and less than or equal to 1.0.
Claim 5
Dependent Claim
54 words
A cell as recited in claim 3 in which said first layered chalcogenide is Li y VSe 2 , y greater than 1.0 and less than or equal to 2.0 and said positive electrode is Li z VSe 2 , z greater than or equal to 0.0 and less than or equal to 1.0.
Claim 6
Dependent Claim
72 words
A cell as recited in claim 3 in which said first layered chalcogenide is Li y VS 2 , y greater than 1.0 and less than or equal to 2.0, and said positive electrode is Li z Fe x V 1-x S 2 , z greater than or equal to 0.0 and less than or equal to 1.0, x greater than or equal to 0.0 and less than or equal to 0.5.
Claim 7
Dependent Claim
12 words
A cell as recited in claim 5 in which x equals 0.
Claim 8
Dependent Claim
69 words
A cell as recited in claim 3 in which said first layered chalcogenide is Li y VS 2 , y greater than 1.0 and less than or equal to 2.0, and said positive electrode is Li z Cr x V 1-x S 2 , z greater than or equal to 0.0 and less than or equal to 1.0, x greater than or equal to 0.0 and less than 1.0.
Claim 9
Dependent Claim
54 words
A cell as recited in claim 3 in which said first layered chalcogenide is Li y TiS 2 , y greater than 1.0 and less than or equal to 2.0, and said positive electrode is Li z TiS 2 , z greater than or equal to 0.0 and less than or equal to 1.0.
Claim 10
Dependent Claim
36 words
A cell as recited in claim 1 in which said positive electrode consists of said first layered chalcogenide and said negative electrode comprises at least one member selected from the group consisting of Li and Na.
Claim 11
Dependent Claim
22 words
A cell as recited in claims 3 or 9 in which said electrolyte consists essentially of LiC10 4 dissolved in propylene carbonate.
Claim 12
Dependent Claim
37 words
A cell as recited in claim 9 in which said first layered chalcogenide is Li y VSe 2 ; y greater than 1.0 and less than or equal to 2.0 and said negative electrode consists of Li.
Claim 13
Dependent Claim
37 words
A cell as recited in claim 9 in which said first layered chalcogenide is Li y VS 2 ; y greater than 1.0 and less than or equal to 2.0 and said negative electrode consists of Li.
Claim 14
Dependent Claim
37 words
A cell as recited in claim 9 in which said first layered chalcogenide is Li y TiS 2 ; y greater than 1.0 and less than or equal to 2.0 and said negative electrode consists of Li.
References Cited (Backward Citations)
US4115633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |