US3964933A
Expired / Lapsed
US
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Carbon article including electrodes and methods of making the same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1974-04-08
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Granted: 1976-06-22
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Expires: 1994-04-08
Abstract
Abstract Carbon compositions comprising carbon supported on oxide supports are provided by vapor deposition of the carbon. The carbon so deposited has the morphology of the underlying support. These carbon compositions are electrically conducting and are particularly useful as an electrode material.
Inventors
- 👤 Shun Chong Fung
- 👤 Samuel J. Tauster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:08
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
60 words
An electrically conducting carbon composition comprising a non-conductive oxide which has a deposit of from about 2 wt. % to about 12 wt. % of carbon on the surface thereof, said oxide being one which forms nonstoichiometric compounds upon reduction, and the morphology of the deposited carbon being substantially identical to that of the oxide when observed by electron micrograph.
Claim 2
Dependent Claim
60 words
An electrically conducting carbon composition comprising a non-conductive oxide which has a deposit of from about 2 wt. % to about 12 wt. % of carbon on the surface thereof, said oxide being one which forms nonstoichiometric compounds upon reduction, and the morphology of the deposited carbon being substantially identical to that of the oxide when observed by electron micrograph.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein the oxide is selected from the group consisting of TiO 2 , Nb 2 O 5 and BaTiO 3 .
Claim 4
Dependent Claim
60 words
An electrode for a fuel cell comprising a nonconducting oxide which forms nonstoichiometric compounds upon reduction, said oxide having a deposit of from about 2 wt. % to about 12 wt. % of carbon on the surface thereof, the morphology of the deposited carbon being substantially identical to that of the oxide, said carbonized oxide being compacted to a mass.
Claim 5
Dependent Claim
60 words
An electrode for a fuel cell comprising a nonconducting oxide which forms nonstoichiometric compounds upon reduction, said oxide having a deposit of from about 2 wt. % to about 12 wt. % of carbon on the surface thereof, the morphology of the deposited carbon being substantially identical to that of the oxide, said carbonized oxide being compacted to a mass.
Claim 6
Dependent Claim
13 words
The electrode of claim 3 wherein an electrocatalyst is deposited on the carbon.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |