US4223080A
Expired / Lapsed
US
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Cell and fuel cell electrodes having poly(phosphazene) binder
Assignee: AT&T Inc
•
Filing: 1979-05-11
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Granted: 1980-09-16
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Expires: 1999-05-11
Abstract
Abstract Cells or fuel cells having two or more electrodes and an electrolyte are described in which at least one of the electrodes has, in addition to the active electrode material, a poly(phosphazene) polymer which is a binder.
Inventors
- 👤 James J. Auborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:33
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/621; H01M4/36; H01M4/58; H01M4/581; H01M4/5815; H01M4/48; H01M4/485; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
A cell comprising a first electrode, a second electrode, and an electrolyte, at least one of said electrodes comprising active electrode material and a binder; CHARACTERIZED IN THAT said binder comprises a polymer having the atom formula (R 2 P=N) n , n greater than or equal to 3, R selected from the group consisting of alkoxy, alkyl, amino, aryl, aryloxy, halogen and phenoxy.
Claim 2
Dependent Claim
64 words
A cell comprising a first electrode, a second electrode, and an electrolyte, at least one of said electrodes comprising active electrode material and a binder; CHARACTERIZED IN THAT said binder comprises a polymer having the atom formula (R 2 P=N) n , n greater than or equal to 3, R selected from the group consisting of alkoxy, alkyl, amino, aryl, aryloxy, halogen and phenoxy.
Claim 3
Dependent Claim
21 words
A cell as recited in claim 1 in which said binder comprises at least 0.5 percent, by weight, of said electrode.
Claim 4
Dependent Claim
19 words
A cell as recited in claim 2 in which said active electrode material is an intercalable or reducible compound.
Claim 5
Dependent Claim
33 words
A cell as recited in claim 2 or 3 in which R is an alkoxy having the atom formula OH 2 C m+2 F 2m+3 , m greater than or equal to zero.
Claim 6
Dependent Claim
12 words
A cell as recited in claim 4 in which m is zero.
Claim 7
Dependent Claim
17 words
A cell as recited in claim 4 in which said electrolyte is LiAsF 6 and propylene carbonate.
Claim 8
Dependent Claim
14 words
A cell as recited in claim 1 in which said active material is carbon.
Claim 9
Dependent Claim
37 words
A cell as recited in claim 7 in which R is selected from the group consisting of OH 2 C m+2 F 2m+3 , m greater than or equal to zero, and OC 6 H 5 .
Claim 10
Dependent Claim
12 words
A cell as recited in claim 8 in which m is zero.
Claim 11
Dependent Claim
38 words
A cell as recited in claim 7 in which said electrolyte is a solution of a salt in an active solvent selected from the group consisting of electrochemically reducible oxides, halides, oxyhalides and thiohalides of phosphorus and sulfur.
Claim 12
Dependent Claim
13 words
A cell as recited in claim 1 in which said polymer is crosslinked.
Claim 13
Dependent Claim
21 words
A cell as recited in claim 7 in which said electrolyte is a solution of a salt in an inactive solvent.
References Cited (Backward Citations)
US4118334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |