Synergistic improvement of oxygen reduction reaction on gold/cerium-phosphate catalysts
| Autor: | Byungwoo Park, Sujin Byun, Taeho Moon, Suji Kang, Seunghoon Nam, Joonhyeon Kang |
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| Rok vydání: | 2014 |
| Předmět: |
Chemical substance
Nanocomposite Renewable Energy Sustainability and the Environment Kinetics Inorganic chemistry Energy Engineering and Power Technology Condensed Matter Physics Electrocatalyst law.invention Catalysis chemistry.chemical_compound Fuel Technology Magazine chemistry law Science technology and society Hydrogen peroxide |
| Zdroj: | International Journal of Hydrogen Energy. 39:10921-10926 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2014.04.211 |
| Popis: | The main challenge in fuel cells lies in improving slow oxygen reduction reaction (ORR) kinetics causing low conversion efficiencies. Here, we introduce the Au/CePO4-binary nanocomposites as effective oxygen reduction catalysts in alkaline media. The ORR activity comparable with Pt is achieved through the serial 4-electron reduction pathway. The bi-functionality of CePO4 is suggested to explain the remarkably enhanced activity on the Au/CePO4 nanocomposites. Significantly, the own catalytic activity of CePO4 for hydrogen peroxide is demonstrated, validating synergistic effects with Au for complete ORR. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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