Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction

doi:10.1016/j.carbon.2018.02.019

	Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction
	Song, Fei 4; Zhang, Qiao 2; Wang, Junhu 3; Yu, Peiwen 2; Yin, Xue 2; Chen, Renjie 5; Nie, Hailiang 2; Zhang, Xiaoling 2; Yang, Wen 1,2
刊名	CARBON
	2018-06-01
卷号	132 页码:85-94
ISSN号	0008-6223
DOI	10.1016/j.carbon.2018.02.019
文献子类	Article
英文摘要	A porous P-doped M/N/C electrocatalyst with high-surface-area (up to 1312 m(2) g(-1)) was prepared by annealing a mixture of triphenylphosphine, polyaniline, phthalocyanine iron (II), and phthalocyanine cobalt (II). The synthesis involves hard templating with silica nanoparticles, followed by NH3 activation. Along with low metal loading (Fe loading = 0.46 wt. %; Co loading = 0.26 wt. %), the resulting P-doped M/N/C exhibits an excellent ORR activity and durability in acidic media. The half-wave potential difference of the catalyst for ORR is only similar to 53 mV negative relative to the benchmarked Pt/C (360 mu g Pt) at the same loading. More importantly, transmission electron microscopy, X-ray absorption fine structure spectra, and electrochemical poisoning by SCN- ion suggested that exclusive metal-coordinate catalytic active sites such as Fe-N-6 and Co-N-4, are involved in ORR. Moreover, as-prepared P-doped M/N/C catalysts with bimetallic catalytic active sites exhibit superior electrochemical performance compared to catalysts with single metal active sites. These results represent an important step towards rational design of high-performance ORR electrocatalysts for polymer exchange membrane fuel cells. (C) 2018 Elsevier Ltd. All rights reserved.
WOS关键词	X-RAY-ABSORPTION ; NITROGEN-DOPED CARBON ; ELECTROLYTE FUEL-CELLS ; ELECTROCHEMICAL PERFORMANCE ; FINE-STRUCTURE ; CATALYSTS ; IRON ; FE ; ORR ; SPECTROSCOPY
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000428233000011
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169164]
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
通讯作者	Yang, Wen
作者单位	1.Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 200051, Peoples R China 2.Beijing Inst Technol, Sch Chem & Chem Engn, Beijing Key Lab Photoelect Electrophoton Convers, Minist Educ China,Key Lab Cluster Sci, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 5.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Song, Fei,Zhang, Qiao,Wang, Junhu,et al. Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction[J]. CARBON,2018,132:85-94.
APA	Song, Fei.,Zhang, Qiao.,Wang, Junhu.,Yu, Peiwen.,Yin, Xue.,...&Yang, Wen.(2018).Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction.CARBON,132,85-94.
MLA	Song, Fei,et al."Porous carbon electrocatalyst with exclusive metal-coordinate active sites for acidic oxygen reduction reaction".CARBON 132(2018):85-94.