| DOI | Resolve DOI: https://doi.org/10.1149/05031.0165ecst |
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| Author | Search for: Hall, David S.; Search for: Bock, Christina1; Search for: MacDougall, Barry R. |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Conference | PRiME 2012: Corrosion, Passivity, and Energy: A Symposium in Honor of Digby D. Macdonald, October 7-12, 2012, Honolulu, Hawaii |
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| Subject | Cathodic current density; Hydrogen evolution reactions; Hydrogen generations; Industrial conditions; Industrial feedstock; Potentiostatic polarization; Reversible hydrogen electrodes; Water electrolysis; Cathodes; Corrosion; Cyclic voltammetry; Hydrogen production; X ray diffraction |
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| Abstract | Hydrogen generation by water electrolysis is a renewable method of producing fuel and industrial feedstock. Ni-based H2-evolution catalysts in alkaline media are low-cost alternatives to the noblemetal- based electrode materials used in acidic media. However, Ni cathodes show a significant decrease in their hydrogen evolution reaction (HER) activity after several hours of electrolysis. We consider the source of electrode deactivation on smooth metallic Ni electrodes by cyclic voltammetry (CV), galvanostatic and potentiostatic polarization, and X-ray diffraction (XRD). Below the reversible hydrogen electrode (RHE) potential, H atoms incorporate deep into the electrode material. Under industrial conditions, i.e., concentrated NaOH/KOH solutions and large cathodic current densities, α-NiHx and β-NiH x can form at the electrode surface. © The Electrochemical Society. |
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| Publication date | 2012-12-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21270069 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 25b8957a-2a0b-45cd-8424-0e915c49ac54 |
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| Record created | 2013-12-18 |
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| Record modified | 2020-04-21 |
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