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题名: Unravelling the Structure of Electrocatalytically Active Fe-N Complexes in Carbon for the Oxygen Reduction Reaction
作者: Zhu, Yansong1, 2;  Zhang, Bingsen1;  Liu, Xin3;  Wang, Da-Wei4;  Su, Dang Sheng1
关键词: active sites ;  electrocatalysts ;  iron ;  Mossbauer spectroscopy ;  oxygen reduction reaction
刊名: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
发表日期: 2014-09-26
DOI: 10.1002/anie.201405314
卷: 53, 期:40, 页:10673-10677
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Non-precious Fe/N co-modified carbon electrocatalysts have attracted great attention due to their high activity and stability in oxygen reduction reaction (ORR). Compared to iron-free N-doped carbon electrocatalysts, Fe/N-modified electrocatalysts show four-electron selectivity with better activity in acid electrolytes. This is believed relevant to the unique Fe-N complexes, however, the Fe-N structure remains unknown. We used o,m,p-phenylenediamine as nitrogen precursors to tailor the Fe-N structures in heterogeneous electrocatalysts which contain FeS and Fe3C phases. The electrocatalysts have been operated for 5000 cycles with a small 39 mV shift in half-wave potential. By combining advanced electron microscopy and Mossbauer spectroscopy, we have identified the electrocatalytically active Fe-N-6 complexes (FeN6, [FeIII(porphyrin)(pyridine)(2)]). We expect the understanding of the FeN6 structure will pave the way towards new advanced Fe-N based electrocatalysts.
关键词[WOS]: PEM FUEL-CELLS ;  NONPRECIOUS-METAL-CATALYSTS ;  ELECTROCHEMICAL REDUCTION ;  CATHODE CATALYSTS ;  BLACK SUPPORTS ;  IRON ;  PERFORMANCE ;  KINETICS ;  COBALT ;  ORR
语种: 英语
WOS记录号: WOS:000342761500018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145555
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Anshan Normal Univ, Sch Chem & Life Sci, Anshan 114005, Liaoning, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
4.UNSW Australia, Sch Chem Engn, Unsw Sydney, NSW 2052, Australia

Recommended Citation:
Zhu, Yansong,Zhang, Bingsen,Liu, Xin,et al. Unravelling the Structure of Electrocatalytically Active Fe-N Complexes in Carbon for the Oxygen Reduction Reaction[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2014,53(40):10673-10677.
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