期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 222, 期 -, 页码 191-199出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2017.10.015
关键词
Non-precious metal catalyst; Electrocatalyst; Oxygen reduction reaction; Fuel cell; Mesoporous material
资金
- Samsung Research Funding Center of Samsung Electronics [SRFCMA1601-05]
- Institute for Basic Science (IBS) in Korea [IBS-R006-G1]
We synthesized ordered mesoporous Fe/N/C with highly active Fe-N-X/C sitesdenoted as m-FePhen-C as a non precious metal catalyst (NPMC) for the oxygen reduction reaction in fuel cells. This was the first study that incorporated a catalyst precursor with Fe-N coordination directly in a simple block co-polymer-assisted soft template method for the synthesis of mesoporous Fe/N/C. The synthesized catalyst (m-FePhen-C) showed a high catalytic performance comparable to that of PVC in half-cell tests, and a membrane electrode assembly (MEA) with an m-FePhen-C cathode exhibited 40% higher power density than did an MEA with a commercial Pt/C cathode in single-cell tests, with comparable electrode thicknesses. This result is highly meaningful in that generation of the Fe-N-x/C active sites and formation of ordered mesoporous structure were achieved simultaneously in the simple soft-template-assisted process, and in that the advantages of mesoporous structure with appropriate pore size in metal-containing NPMC were elucidated for high-performance MEAs.
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