EP0111052A2
Expired / Lapsed
EP
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Fuel cell electrode structure and method of making it
Assignee: Fuelcell Energy Inc
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Filing: 1983-08-18
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Granted: —
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Expires: 2003-08-18
Abstract
Abstract An electrode provided with an alkali or alkaline earth hydroxide constituent which upon heat treatment in the presence of carbon dioxide is converted to a carbonate constituent.
Inventors
- 👤 Pinakin S. Patel
- 👤 Lawrence M. Paetsch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8825; H01M4/8846; H01M4/8605; H01M4/8621; H01M4/8803; H01M4/8807; H01M4/8878; H01M4/8882; H01M8/00; H01M8/14; H01M8/141; H01M8/142; H01M2004/8678; H01M2004/8684; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M4/8647; H01M4/8652; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
13 words
Apparatus comprising: an electrode; and an alkaline hydroxide constituent incorporated into said electrode.
Claim 2
Dependent Claim
13 words
Apparatus comprising: an electrode; and an alkaline hydroxide constituent incorporated into said electrode.
Claim 3
Dependent Claim
22 words
Apparatus in accordance with claim 1 wherein: said alkaline hydroxide constituent comprises one of an alkali hydroxide and an alkaline earth hydroxide.
Claim 4
Dependent Claim
17 words
Apparatus in accordance with claim 2 wherein: said hydroxide comprises one of lithium, sodium and potassium hydroxide.
Claim 5
Dependent Claim
14 words
Apparatus in accordance with claim 2 wherein: said hydroxide comprises lithium and potassium hydroxide.
Claim 6
Dependent Claim
11 words
Apparatus in accordance with claim 2 wherein: said electrode comprises nickel.
Claim 7
Dependent Claim
20 words
Apparatus in accordance with claim 1, 2, 3, 4 or 5 further comprising: a ceramic oxide incorporated into said electrode.
Claim 8
Dependent Claim
37 words
Apparatus in accordance with claim 6 wherein: said ceramic oxide is such that during heating in the presence of carbon dioxide said ceramic oxide reacts with said hydroxide and other components to produce components having increased stability.
Claim 9
Dependent Claim
18 words
Apparatus in accordance with claim 7 wherein: said ceramic oxide comprises one of alumina, zirconia and iron oxide.
Claim 10
Dependent Claim
13 words
Apparatus in accordance with claim 7 wherein: said ceramic is A1(OH) 3 .
Claim 11
Dependent Claim
12 words
Apparatus in accordance with claim 9 wherein: said hydroxide is lithium hydroxide.
Claim 12
Dependent Claim
42 words
Apparatus in accordance with claim 1 wherein: the amount of hydroxide added is such that upon heat treating said electrode in the presence of carbon dioxide carbonate constituent filling about 5 to 85 percent of the electrode pore vol- lume is produced
Claim 13
Dependent Claim
20 words
Apparatus in accordance with claim 1 wherein: said alkaline hydroxide constituent comprises an alkali hydroxide and an alkaline earth hydroxide.
Claim 14
Independent Claim
47 words
A method of fabricating an electrode for use in a molten carbonate fuel cell comprising: incorporating an alkaline hydroxide into an electrode structure at room temperature; heating the electrode structure carrying the hydroxide in the presence of carbon dioxide to convert the hydroxide to a carbonate constituent.
Claim 15
Independent Claim
47 words
A method of fabricating an electrode for use in a molten carbonate fuel cell comprising: incorporating an alkaline hydroxide into an electrode structure at room temperature; heating the electrode structure carrying the hydroxide in the presence of carbon dioxide to convert the hydroxide to a carbonate constituent.
Claim 16
Dependent Claim
13 words
A method in accordance with claim 13 wherein: said incorporating is by impregnation.
Claim 17
Dependent Claim
19 words
A method in accordance with claim 14 wherein: said impregnation is by one of spraying, dipping and vacuum filtration.
Claim 18
Dependent Claim
21 words
A method in accordance with claim 13 wherein: said heating is subsequent to said electrode being incorporated into a fuel cell.
Claim 19
Dependent Claim
21 words
A method in accordance with claim 13 wherein: said heating is prior to said electrode being incorporated into a fuel cell.
Claim 20
Dependent Claim
21 words
A method in accordance with claim 13 wherein: said hydroxide is one of an alkali hydroxide and an alkaline earth hydroxide.
Claim 21
Dependent Claim
18 words
A method in accordance with claim 18 wherein: said hydroxide is one of lithium, potassium and sodium hydroxide.
Claim 22
Dependent Claim
22 words
A method in accordance with claim 13 or 18 further comprising: incorporating a ceramic oxide into said electrode prior to said heating.
Claim 23
Dependent Claim
15 words
A method in accordance with claim 20 wherein: said ceramic oxide incorporation is by impregnati
Claim 24
Dependent Claim
18 words
A method in accordance with claim 20 wherein: said ceramic oxide incorporation is prior to said hydroxide incorporation.
Claim 25
Dependent Claim
19 words
A method in accordance with claim 20 wherein: said ceramic oxide is one of alumina, zirconia and iron oxide.
Claim 26
Dependent Claim
13 words
A method in accordance with claim 20 wherein: said hydroxide is lithium hydroxide.
Claim 27
Dependent Claim
31 words
A method in accordance with claim 13 wherein: the amount of hydroxide added in such that the resultant carbonate constituent fills about 5 to 85 percent of the electrode pore volume.
Claim 28
Dependent Claim
21 words
A method in accordance with claim 13 wherein: said alkaline hydroxide constituent comprises an alkali hyrdoxide and an alkaline earth hydroxide.
References Cited (Backward Citations)
No citation records indexed.
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