Synergistic improvement of oxygen reduction reaction on gold/cerium-phosphate catalysts |
| |
| Authors: | Joonhyeon Kang Sujin Byun Seunghoon Nam Suji Kang Taeho Moon Byungwoo Park |
| |
| Affiliation: | 1. WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea;2. Department of Materials Science and Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea |
| |
| Abstract: | 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. |
| |
| Keywords: | Fuel cell Electrocatalyst Oxygen reduction reaction Nanocomposite |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
