期刊
CARBON
卷 78, 期 -, 页码 60-69出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.06.048
关键词
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Hierarchically porous N-doped carbon nanoflakes (HPNCNFs) were facilely synthesized on a large scale via pyrolysis of 1,8-diaminonaphthalene (DAN)/FeCl3 center dot 6H(2)O mixture under Ar followed by acid leaching. Both pyrolysis temperature and the amount of Fe species have strong influence on catalyst activity. It suggests that the presence of large excess Fe species not only is key to nanoflake formation but also serves as a mesopore-forming agent. The HPNCNF-900 catalyst, obtained at 900 degrees C with a mass ratio 1:5 of DAN to FeCl3 center dot 6H(2)O, was found to exhibit superhigh oxygen reduction reaction activity and excellent durability in alkaline media outperforming the state-of-the-art Pt/C catalyst at a moderate loading. (C) 2014 Elsevier Ltd. All rights reserved,
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