期刊
CARBON
卷 51, 期 -, 页码 274-281出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.08.054
关键词
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资金
- Hydrogen Energy R D center
- Brain Korea 21
- WCU [R31-30005]
- National Research Foundation of Korea(NRF)
- Ministry of Education, Science and Technology [2009-0083512]
- National Research Foundation of Korea [R31-2012-000-30005-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Nitrogen-containing carbon materials were prepared by acetonitrile pyrolysis on carbon black and used as a support for a Pt catalyst. The Pt particles on N-containing carbon exhibited increased activity and stability in electrochemical hydrogen oxidation relative to Pt on pristine carbon black. The N-doped carbon had a graphitic structure and contained pyridinic and quaternary nitrogen species. The Pt nanoparticles were better-dispersed because of increased hydrophilicity induced by the nitrogen species. The Pt/N-containing carbon showed higher stability in a potential cycling test than Pt/C, because of an increased metal-support interaction. Using XPS and EELS mapping, we demonstrated that the metal-support interaction became stronger and more specific by adding nitrogen into carbon. (C) 2012 Elsevier Ltd. All rights reserved.
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