The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction

	The key role of metal dopants in nitrogen-doped carbon xerogel for oxygen reduction reaction
	Liu, Sisi 1,2; Deng, Chengwei 1,2; Yao, Lan 1,2; Zhong, Hexiang 1; Zhang, Huamin 1
刊名	journal of power sources
	2014-12-10
卷号	269 期号:1 页码:225-235
关键词	Nitrogen doped xerogel Metal effect Non-noble metal catalyst Fuel cell
通讯作者	钟和香 ; 张华民
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.
学科主题	物理化学
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000340975200031
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/143927]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 GB/T 7714	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.(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.