The influence of addition of iridium-oxide to nickel-molybdenum-oxide cathodes on the electrocatalytic activity towards hydrogen evolution in acidic medium and on the cathode deactivation resistance
| Autor: | Sasha Omanovic, Liem Dam-Quang, Anlan Hong, Abraham Gomez Vidales |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Electrolysis
Electrolysis of water Chemistry General Chemical Engineering Molybdenum oxide Inorganic chemistry chemistry.chemical_element 02 engineering and technology Iridium oxide 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cathode 0104 chemical sciences law.invention Nickel law Electrode Electrochemistry Hydrogen evolution 0210 nano-technology |
| Zdroj: | Electrochimica Acta. 302:198-206 |
| ISSN: | 0013-4686 |
| Popis: | The influence of addition of Ir-oxide into Ni-Mo-oxide cathodes on the electrocatalytic activity of the hydrogen evolution reaction in acidic media was investigated. It was found that as the Ir-oxide content increased, the electrocatalytic activity towards hydrogen evolution also increased. This was attributed to the following two effects: the increase in the number of Ir surface sites and to the possible modification of the electronic structure of the material. Long-term electrolysis experiments confirmed high deactivation resistance of the Ni-Mo-Ir-oxide cathodes. It was also demonstrated that it is possible to in-situ reactivate the electrodes, making them potentially good cathode candidates for water electrolysis in the acidic medium. |
| Databáze: | OpenAIRE |
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