US4542083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous cell using mixed metal oxide positive electrode
Assignee: Nokia Bell Labs
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Filing: 1984-06-11
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Granted: 1985-09-17
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Expires: 2004-06-11
Abstract
Abstract It has been found that mixed metal oxides such as vanadium tungsten oxides or titanium niobium oxides, having the stoichiometry xM A O 2 . Y 2 B O 5 . zM C O 3 constitute useful active positive electrode material in nonaqueous cells.
Inventors
- 👤 Robert J. Cava
- 👤 Donald W. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:04
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/485; H01M10/00; H01M10/05; H01M10/052; H01M4/13; H01M4/131; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
A nonaqueous cell comprising a negative electrode, an electrolyte and a positive electrode, said positive electrode active material comprising material of at least one Wadsley phase having the nominal atom composition xM A O 2 .yM 2 B O 5 .zM C O 3 , at least two of x, y, and z are nonzero, x+y+z=1.0 and at least two metal elements M are present, wherein M A is at least one element selected from the group consisting of the elements of Groups IVB, VB and VIB of the periodic table, M B is at least one element selected from the group consisting of the elements of Groups VB and VIB of the periodic table, and M C is at least one element selected from the group consisting of the elements of group VIB of the periodic table.
Claim 2
Dependent Claim
138 words
A nonaqueous cell comprising a negative electrode, an electrolyte and a positive electrode, said positive electrode active material comprising material of at least one Wadsley phase having the nominal atom composition xM A O 2 .yM 2 B O 5 .zM C O 3 , at least two of x, y, and z are nonzero, x+y+z=1.0 and at least two metal elements M are present, wherein M A is at least one element selected from the group consisting of the elements of Groups IVB, VB and VIB of the periodic table, M B is at least one element selected from the group consisting of the elements of Groups VB and VIB of the periodic table, and M C is at least one element selected from the group consisting of the elements of group VIB of the periodic table.
Claim 3
Dependent Claim
23 words
A cell as recited in claim 1 in which at least one of M A and M B is a Group VB element.
Claim 4
Dependent Claim
15 words
A cell as recited in claim 2 in which said Group VB element is V.
Claim 5
Dependent Claim
13 words
A cell as recited in claim 3 in which M C is W.
Claim 6
Dependent Claim
20 words
A cell as recited in claim 4 in which x is within the range from approximately 0.3 to approximately 0.6.
Claim 7
Dependent Claim
20 words
A cell as recited in claim 5 in which y is within the range from approximately 0.15 to approximately 0.3.
Claim 8
Dependent Claim
20 words
A cell as recited in claim 6 in which z is within the range from approximately 0.2 to approximately 0.4.
Claim 9
Dependent Claim
22 words
A cell as recited in claim 4 in which x is approximately 0.62, y is approximately 0.15, and z is approximately 0.23.
Claim 10
Dependent Claim
16 words
A cell as recited in claim 1 in which M B is a Group VB element.
Claim 11
Dependent Claim
15 words
A cell as recited in claim 9 in which said Group VIB element is Nb.
Claim 12
Dependent Claim
16 words
A cell as recited in claim 10 in which M A is a Group IVB element.
Claim 13
Dependent Claim
15 words
A cell as recited in claim 11 in which said Group IVB element is Ti.
Claim 14
Dependent Claim
13 words
A cell as recited in claim 12 in which z is approximately 0.0.
Claim 15
Dependent Claim
24 words
A cell as recited in claim 13 in which x is between approximately 0.10 and 0.50 and y is between approximately 0.5 and 0.92.
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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) | 1988-09-16 | 1989-03-18 | 1989-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-16 | 1993-03-18 | 1993-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-16 | 1997-03-18 | 1997-09-17 | $7700.00 | Window Closed / Lapsed |