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学科主题物理化学
The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction
Liu, Sisi1,2; Deng, Chengwei1,2; Yao, Lan1,2; Zhong, Hexiang1; Zhang, Huamin1; Zhong HX(钟和香); Zhang HM(张华民)
关键词Nitrogen Doped Xerogel Metal Effect Non-noble Metal Catalyst Fuel Cell
刊名JOURNAL OF POWER SOURCES
2014-12-10
DOI10.1016/j.jpowsour.2014.06.148
269期:1页:225-235
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Electrochemistry ; Energy & Fuels
研究领域[WOS]Electrochemistry ; Energy & Fuels
关键词[WOS]PEM FUEL-CELLS ; HIGH ELECTROCATALYTIC ACTIVITY ; FE-BASED CATALYSTS ; ACTIVE-SITES ; NANOFIBER ELECTRODES ; COMPOSITE CATALYSTS ; CATHODE CATALYSTS ; FE/N/C CATALYSTS ; HEAT-TREATMENT ; SURFACE-AREA
英文摘要Highly active non-precious metal catalysts based on nitrogen-doped carbon xerogel (NCX) for the oxygen reduction reaction (ORR) is prepared with resorcinol(R)-formaldehyde (F) resin as carbon precursor and NH3 as nitrogen source. NCX samples doped with various transition metal species are investigated to elucidate the effect of transition metals on the structure and ORR activity of the products. As-prepared NCX catalysts with different metals are characterized using nitrogen-adsorption analysis, X-ray diffractometry, X-ray photoelectron spectroscopy, and Raman spectroscopy. The structural properties and ORR activities of the catalysts are altered by addition of different metals, and NO( doped with iron exhibits the best ORR activity. Metal doping evidently promotes the formation of more micropores and mesopores. Raman and XPS studies reveal that iron, cobalt, and nickel can increase pyridinic-N contents and that iron can catalyse the formation of graphene structures and enhance quaternary-N contents. Whereas the total N-content does not determine ORR activity, Metal-N-4/C-like species generated from the interaction of the metals with nitrogen and carbon atoms play important roles in achieving high ORR activity. (C) 2014 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000340975200031
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143927
专题中国科学院大连化学物理研究所
通讯作者Zhong HX(钟和香); Zhang HM(张华民)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Energy Storage, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
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Liu, Sisi,Deng, Chengwei,Yao, Lan,et al. The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction[J]. JOURNAL OF POWER SOURCES,2014,269(1):225-235.
APA Liu, Sisi.,Deng, Chengwei.,Yao, Lan.,Zhong, Hexiang.,Zhang, Huamin.,...&张华民.(2014).The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction.JOURNAL OF POWER SOURCES,269(1),225-235.
MLA Liu, Sisi,et al."The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction".JOURNAL OF POWER SOURCES 269.1(2014):225-235.
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