Corrosion-resistant non-noble metal electrodes for PEM-type water electrolyzer
| Autor: | Yoshikazu Ito, Kailong Hu, Kensaku Nagasawa, Jun-ichi Fujita, Ganesan Elumalai, Samuel Jeong, Yoshitsugu Sone, Aimi Asilah Haji Tajuddin, Zeyu Xi |
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| Rok vydání: | 2021 |
| Předmět: |
Electrolysis
Materials science Hydrogen Electrolysis of water Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology chemistry.chemical_element engineering.material Condensed Matter Physics law.invention Catalysis Corrosion Fuel Technology Chemical engineering chemistry law Electrode engineering Noble metal Platinum |
| Zdroj: | International Journal of Hydrogen Energy. 46:38603-38611 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.09.116 |
| Popis: | Developing cheap and highly durable non-noble metal catalysts for water electrolysis to sustainably produce hydrogen as alternatives to platinum-based catalysts is essential. Herein, we report graphene-encapsulated NiMo alloys as acid-stable non-noble metal catalyst electrodes. The graphene-encapsulated NiMo cathode showed a highly stable performance in the potential cycling test (10,000 cycles) from 0 to 5.0 A cm−2 and 100 h of durability at a 2.2 V constant cell voltage. A balance between catalytic activity and corrosion in acidic environments was achieved by tuning the number of N-doped graphene layers. Through their application in a full-cell PEM-type water electrolyzer, we verify that noble metal catalysts can be replaced by non-noble metal catalysts. Such cheap acid-stable non-noble metal electrodes have promising practical applications in PEM-type water electrolysis. |
| Databáze: | OpenAIRE |
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