Improved electrodes and gas impurity investigations on alkaline electrolysers
| Autor: | Reissner, R., Schiller, G., Knoeri, T., Doyen, W., Alvarez-Gallego, Y., Vaes, J., Peter Stanley Jørgensen, Janet Jonna Bentzen, Bowen, Jacob R. |
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| Přispěvatelé: | Spanish Hydrogen Association Technical Secretariat, S. |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Reissner, R, Schiller, G, Knoeri, T, Doyen, W, Alvarez-Gallego, Y, Vaes, J, Jørgensen, P S, Bentzen, J J & Bowen, J R 2016, ' Improved electrodes and gas impurity investigations on alkaline electrolysers ' The 21st World Hydrogen Energy Conference (WHEC), Zaragoza, Spain, 13/06/2016-16/06/2016, . Technical University of Denmark Orbit |
| Popis: | Electrodes with Raney-nickel-alloy coatings (low cost material) → overpotential reduction of 330 mV • Electrodes show excellent stability: 1100 on-off cycles, 98% of initial efficiency retained • Hydrogen in oxygen impurity reduced by > factor of 4 due to e-bypass-separator (double layer separator) • Cell can be operated at higher pressure and/or lower current density before reaching the limiting gas concentration • Gas impurity in an electrolyser depends on many more factors than only which type of separator is used • For further improvement of electrolysers study of internal problems using current density distribution measurements has been started |
| Databáze: | OpenAIRE |
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