EP0107612A2
Expired / Lapsed
EP
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Method of conditioning a porous gas-diffusion electrode
Assignee: Eltech Systems Ltd
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Filing: 1983-08-16
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Granted: —
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Expires: 2003-08-16
Abstract
Abstract A porous gas-diffusion electrode having a ruthenium electrocatalyst is conditioned for operation as a hydrogen consuming anode by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen. Preferably, the electrode is contacted with a hydrogen atmosphere prior to or at the beginning of hydrogen evolution, and conditioning may be carried out in situ in a cell in which the electrode is to operate as hydrogen consuming anode.
Inventors
- 👤 John Greig Bannochie
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:55
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/075; C25B11/081; C25C; C25C7/00; C25C7/02; H01M10/00; H01M10/34; H01M10/345; H01M8/00; H01M8/08; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
A method of conditioning a porous gas-diffusion electrode having a ruthenium electrocatalyst for operation as a hydrogen consuming anode. characterized by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen.
Claim 2
Independent Claim
42 words
A method of conditioning a porous gas-diffusion electrode having a ruthenium electrocatalyst for operation as a hydrogen consuming anode. characterized by connecting the electrode as a cathode in a suitable electrolyte until it drops below the reversible hydrogen potential and evolves hydrogen.
Claim 3
Dependent Claim
25 words
The method of Claim 1. which is carried out in situ in a cell in which the electrode is to operate as hydrogen consuming anode.
Claim 4
Dependent Claim
24 words
The method of Claim 1, in which the electrode is contacted with a hydrogen atmosphere prior to or at the beginning of hydrogen evolution.
Claim 5
Dependent Claim
24 words
The method of Claim 1. in which the ruthenium electrocatalyst has been deposited in finely divided carbon by the reduction of a ruthenium salt.
Claim 6
Dependent Claim
15 words
A porous hydrogen-consuming electrode having a ruthenium electrocatalyst conditioned by the method of Claim 1.
Claim 7
Dependent Claim
10 words
A metal-hydrogen battery comprising the conditioned electrode of Claim 5.
Claim 8
Dependent Claim
19 words
A method of electrowinning metals from an acid electrolyte, comprising supplying hydrogen to the conditioned anode of Claim 5.
Claim 9
Dependent Claim
22 words
A method of producing caustic by the electrolysis of a sodium salt, comprising supplying hydrogen to the conditioned anode of Claim 5.
References Cited (Backward Citations)
No citation records indexed.
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