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Unravelling the Structure of Electrocatalytically Active Fe-N Complexes in Carbon for the Oxygen Reduction Reaction
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
2014-09-26
DOI10.1002/anie.201405314
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
关键词[WOS]PEM FUEL-CELLS ; NONPRECIOUS-METAL-CATALYSTS ; ELECTROCHEMICAL REDUCTION ; CATHODE CATALYSTS ; BLACK SUPPORTS ; IRON ; PERFORMANCE ; KINETICS ; COBALT ; ORR
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.
语种英语
WOS记录号WOS:000342761500018
引用统计
被引频次:163[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145555
专题中国科学院大连化学物理研究所
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
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GB/T 7714
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.
APA Zhu, Yansong,Zhang, Bingsen,Liu, Xin,Wang, Da-Wei,&Su, Dang Sheng.(2014).Unravelling the Structure of Electrocatalytically Active Fe-N Complexes in Carbon for the Oxygen Reduction Reaction.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,53(40),10673-10677.
MLA Zhu, Yansong,et al."Unravelling the Structure of Electrocatalytically Active Fe-N Complexes in Carbon for the Oxygen Reduction Reaction".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 53.40(2014):10673-10677.
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