US3981746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for fuel cell
Assignee: Compagnie Francaise de Raffinage SA
•
Filing: 1971-06-07
•
Granted: 1976-09-21
•
Expires: 1991-06-07
Abstract
Abstract FUEL CELL HAS BEEN PROVIDED HAVING AN ELECTROLYTE OF SOLID, FRITTED CERAMIC SUITABLE FOR OPERATION AT HIGH TEMPERATURES AND FOR OPERATION ON A HYDROCARBON OR HYDROGEN AS A FUEL AND OXYGEN OR OXYGEN CONTAINING GAS AS A COMBURANT COMPRISING OF: AS AN ELECTROLYTE, A CUBIC PHASE-STABILIZED ZIRCONIA; A CATHODE; AND AS AN ANODE, AN ELECTRON COLLECTOR AND AN OXIDATION CATALYST. A method for preparing the anode therefor has been provided as well as a method directed to the operation of said fuel cell.
Inventors
- 👤 Jean Bezaudun
- 👤 Joseph Edouard Weisang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:44
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/1213; H01M8/06; H01M8/0606; H01M8/0612; H01M8/0625; H01M8/1231; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A fuel cell having an electrolyte of solid, fritted ceramic, suitable for operation at high temperatures and for operation on a hydrocarbon or hydrogen as a fuel and oxygen or oxygen containing gas as a comburant, consisting essentially of an electrolyte of a cubic-phase stabilized zirconia, a cathode, and an anode therefor, said anode being porous and consisting essentially of an electron collector wherein said collector is selected from the group consisting of cubic-phase stabilized zirconia modified with a uranium oxide, silver and copper and an oxidation catalyst wherein said catalyst is selected from the group consisting of silver and oxides of chromium, and vanadium.
Claim 2
Dependent Claim
105 words
A fuel cell having an electrolyte of solid, fritted ceramic, suitable for operation at high temperatures and for operation on a hydrocarbon or hydrogen as a fuel and oxygen or oxygen containing gas as a comburant, consisting essentially of an electrolyte of a cubic-phase stabilized zirconia, a cathode, and an anode therefor, said anode being porous and consisting essentially of an electron collector wherein said collector is selected from the group consisting of cubic-phase stabilized zirconia modified with a uranium oxide, silver and copper and an oxidation catalyst wherein said catalyst is selected from the group consisting of silver and oxides of chromium, and vanadium.
Claim 3
Dependent Claim
19 words
The fuel cell according to claim 1, wherein the oxidation catalyst is as a layer on the electron collector.
Claim 4
Dependent Claim
17 words
The fuel cell according to claim 1, wherein the oxidation catalyst is dispersed through the electron collector.
Claim 5
Dependent Claim
79 words
A fuel cell having an electrolyte of solid, fritted ceramic, suitable for operation at high temperatures and for operation on a hydrocarbon or hydrogen as a fuel and oxygen or oxygen containing gas as a comburant, consisting essentially of an electrolyte of a cubic-phase stabilized zirconia, a cathode, and an anode therefor, said anode being porous and consisting essentially of an electron collector which is silver and an oxidation catalyst which is a mixture of silver and chromium oxide.
Claim 6
Dependent Claim
79 words
A fuel cell having an electrolyte of solid, fritted ceramic, suitable for operation at high temperatures and for operation on a hydrocarbon or hydrogen as a fuel and oxygen or oxygen containing gas as a comburant, consisting essentially of an electrolyte of a cubic-phase stabilized zirconia, a cathode, and an anode therefor, said anode being porous and consisting essentially of an electron collector which is silver and an oxidation catalyst which is a mixture of silver and chromium oxide.
Claim 7
Dependent Claim
13 words
The fuel cell according to claim 1, wherein the electron collector is copper.
Claim 8
Dependent Claim
122 words
In a method for electro-chemical combustion of hydrogen or a hydrocarbon in the presence of oxygen, consisting of combusting said hydrocarbon in a fuel call having as an electrolyte a cubic-phase stabilized zirconia, a cathode, and an anode, the improvement comprising conducting said combusting of said hydrocarbon at said anode of said fuel cell wherein said anode is selected from the group consisting of cubic-phase stabilized zirconia modified with a uranium oxide, silver and copper and an oxidation catalyst for said hydrocarbon, said anode being porous, whereby substantially no carbon deposits are formed at said anode when said fuel cell is operated with methane as the fuel, said oxidation catalyst is selected from the group consisting of chromium oxide, silver, vanadium oxide.
Claim 9
Dependent Claim
122 words
In a method for electro-chemical combustion of hydrogen or a hydrocarbon in the presence of oxygen, consisting of combusting said hydrocarbon in a fuel call having as an electrolyte a cubic-phase stabilized zirconia, a cathode, and an anode, the improvement comprising conducting said combusting of said hydrocarbon at said anode of said fuel cell wherein said anode is selected from the group consisting of cubic-phase stabilized zirconia modified with a uranium oxide, silver and copper and an oxidation catalyst for said hydrocarbon, said anode being porous, whereby substantially no carbon deposits are formed at said anode when said fuel cell is operated with methane as the fuel, said oxidation catalyst is selected from the group consisting of chromium oxide, silver, vanadium oxide.
Claim 10
Dependent Claim
102 words
In a method for electro-chemical combustion of hydrogen or a hydrocarbon in the presence of oxygen, consisting of combusting said hydrocarbon in a fuel cell having as an electrolyte a cubic-phase stabilized zirconia, a cathode, and an anode, the improvement comprising conducting said conbusting of said hydrocarbon at said anode of said fuel cell wherein said anode is silver and an oxidation catalyst for said hydrocarbons, said anode being porous, whereby substantially no carbon deposits are formed at said anode when said fuel cell is operated with methane as the fuel, said oxidation catalyst is a mixture of silver and chromium oxide.
Claim 11
Dependent Claim
102 words
In a method for electro-chemical combustion of hydrogen or a hydrocarbon in the presence of oxygen, consisting of combusting said hydrocarbon in a fuel cell having as an electrolyte a cubic-phase stabilized zirconia, a cathode, and an anode, the improvement comprising conducting said conbusting of said hydrocarbon at said anode of said fuel cell wherein said anode is silver and an oxidation catalyst for said hydrocarbons, said anode being porous, whereby substantially no carbon deposits are formed at said anode when said fuel cell is operated with methane as the fuel, said oxidation catalyst is a mixture of silver and chromium oxide.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |