US4640744A
Expired / Lapsed
US
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Amorphous carbon electrodes and their use in electrochemical cells
Assignee: BP Corp North America Inc
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Filing: 1984-01-23
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Granted: 1987-02-03
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Expires: 2004-01-23
Abstract
Abstract Amorphous carbon is an electrocatalytically active material which is useful as an electrode component in electrochemical cells.
Inventors
- 👤 Arthur T. Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/02; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/663; H01G; H01G9/00; H01G9/20; H01M14/00; H01M14/005; H01M4/661; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
33 words
An electrochemical cell comprising at least two electrodes in physical contact with an electrolyte wherein at least one of said electrodes comprises an electrically conducting substrate having a surface coating of amorphous carbon.
Claim 2
Dependent Claim
33 words
An electrochemical cell comprising at least two electrodes in physical contact with an electrolyte wherein at least one of said electrodes comprises an electrically conducting substrate having a surface coating of amorphous carbon.
Claim 3
Dependent Claim
30 words
An electrochemical cell as set forth in claim 1 wherein said surface coating of amorphous carbon has a thickness in the range from about 10 to about 10,000 Angstrom units.
Claim 4
Dependent Claim
17 words
An electrochemical cell as set forth in claim 1 wherein said electrically conducting substrate is a metal.
Claim 5
Dependent Claim
33 words
An electrochemical cell as set forth in claim 3 wherein said electrically conducting substrate comprises at least one metal selected from the group consisting of iron, titanium, nickel, vanadium, chromium, manganese and copper.
Claim 6
Dependent Claim
17 words
An electrochemical cell as set forth in claim 1 wherein said electrically conducting substrate is a semiconductor.
Claim 7
Dependent Claim
38 words
A photoelectrochemical cell comprising: (a) a photoelectrode which comprises a semiconductor substrate wherein said photoelectrode has a surface coating of amorphous carbon, (b) a counterelectrode, and (c) a liquid electrolyte in physical contact with said photoelectrode and counterelectrode.
Claim 8
Dependent Claim
38 words
A photoelectrochemical cell comprising: (a) a photoelectrode which comprises a semiconductor substrate wherein said photoelectrode has a surface coating of amorphous carbon, (b) a counterelectrode, and (c) a liquid electrolyte in physical contact with said photoelectrode and counterelectrode.
Claim 9
Dependent Claim
30 words
A photoelectrochemical cell as set forth in claim 6 wherein said surface coating of amorphous carbon has a thickness in the range from about 10 to about 500 Angstrom units.
Claim 10
Dependent Claim
15 words
A photoelectrochemical cell as set forth in claim 6 wherein said semiconductor substrate is silicon.
Claim 11
Dependent Claim
60 words
A photoelectrochemical cell as set forth in claim 6 wherein said photoelectrode comprises a layer of insulator material which separates and is in physical contact with said semiconductor substrate and said surface coating of amorphous carbon, and wherein said insulator material has a thickness which is effective to permit electron tunneling between said semiconductor substrate and said amorphous carbon coating.
Claim 12
Dependent Claim
29 words
A photoelectrochemical cell as set forth in claim 9 wherein said layer of insulator material has a thickness in the range from about 5 to about 25 Angstrom units.
Claim 13
Independent Claim
30 words
A method for carrying out an electrochemical reaction which comprises effecting said electrochemical reaction at an electrode which comprises an electrically conducting substrate having a surface coating of amorphous carbon.
Claim 14
Independent Claim
30 words
A method for carrying out an electrochemical reaction which comprises effecting said electrochemical reaction at an electrode which comprises an electrically conducting substrate having a surface coating of amorphous carbon.
Claim 15
Dependent Claim
29 words
A method as set forth in claim 11 wherein said surface coating of amorphous carbon has a thickness in the range from about 10 to about 10,000 Angstrom units.
Claim 16
Dependent Claim
16 words
The method as set forth in claim 11 wherein said electrically conducting substrate is a metal.
Claim 17
Dependent Claim
32 words
The method as set forth in claim 13 wherein said electrically conducting substrate comprises at least one metal selected from the group consisting of iron, titanium, nickel, vanadium, chromium, manganese, and copper.
Claim 18
Dependent Claim
16 words
The method as set forth in claim 11 wherein said electrically conducting substrate is a semiconductor.
References Cited (Backward Citations)
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