Iron Oxide Nanoclusters Incorporated into Iron Phthalocyanine as Highly Active Electrocatalysts for the Oxygen Reduction Reaction

IMR OpenIR

	Iron Oxide Nanoclusters Incorporated into Iron Phthalocyanine as Highly Active Electrocatalysts for the Oxygen Reduction Reaction
	Cheng, Y; Liang, J; Veder, JP; Li, M; Chen, SM; Pan, J; Song, L; Cheng, HM; Liu, C; Jiang, SP; Jiang, SP (reprint author), Curtin Univ, Fuels & Energy Technol Inst, Dept Chem Engn, Perth, WA 6102, Australia.
	2018-01-23
发表期刊	CHEMCATCHEM
ISSN	1867-3880
卷号	10 期号:2 页码:475-483
摘要	Iron-nitrogen-carbon (Fe-N-C) composites have emerged as active and non-precious-metal electrocatalysts for the oxygen reduction reaction (ORR). Here, we developed a simple process to synthesize FeOx nanoclusters (NCs) incorporated with iron phthalocyanine (FePc) supported on graphene (FeOx/FePc) as highly active electrocatalysts for the ORR by a self-assembly method. The electrochemical activity of FeOx/FePc depends on the loading or size of the FeOx NCs. The best results are obtained on FeOx/FePc with 10wt% FeOx NCs of a size of approximately 2nm and a thickness of approximately 0.6nm, which achieves a half-wave potential of 0.888V and current density of 37.6Ag(-1) at 0.9V (vs. the reversible hydrogen electrode). This is 50mV higher than that of FePc supported on graphene and 64mV higher than that of Pt/C in 0.1m KOH solution at a catalyst loading of 0.1mgcm(-2). X-ray absorption spectroscopy and electrochemical cyclic voltammetry results indicate that the incorporated FeOx NCs interact with the active center of FePc, Fe-N-4, to enhance the electron transition and reversibility of the Fe-III/Fe-II redox couple and promote the kinetics of the ORR. We demonstrate that the nature of the active center of FePc (i.e., Fe-N-4) is related closely to the activity of the Fe-III/Fe-II redox couple.; Iron-nitrogen-carbon (Fe-N-C) composites have emerged as active and non-precious-metal electrocatalysts for the oxygen reduction reaction (ORR). Here, we developed a simple process to synthesize FeOx nanoclusters (NCs) incorporated with iron phthalocyanine (FePc) supported on graphene (FeOx/FePc) as highly active electrocatalysts for the ORR by a self-assembly method. The electrochemical activity of FeOx/FePc depends on the loading or size of the FeOx NCs. The best results are obtained on FeOx/FePc with 10wt% FeOx NCs of a size of approximately 2nm and a thickness of approximately 0.6nm, which achieves a half-wave potential of 0.888V and current density of 37.6Ag(-1) at 0.9V (vs. the reversible hydrogen electrode). This is 50mV higher than that of FePc supported on graphene and 64mV higher than that of Pt/C in 0.1m KOH solution at a catalyst loading of 0.1mgcm(-2). X-ray absorption spectroscopy and electrochemical cyclic voltammetry results indicate that the incorporated FeOx NCs interact with the active center of FePc, Fe-N-4, to enhance the electron transition and reversibility of the Fe-III/Fe-II redox couple and promote the kinetics of the ORR. We demonstrate that the nature of the active center of FePc (i.e., Fe-N-4) is related closely to the activity of the Fe-III/Fe-II redox couple.
部门归属	[cheng, yi ; li, meng ; pan, jian ; jiang, san ping] curtin univ, fuels & energy technol inst, dept chem engn, perth, wa 6102, australia ; [liang, ji ; cheng, hui-ming ; liu, chang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [veder, jean-pierre] curtin univ, john de laeter ctr, bentley, wa 6102, australia ; [chen, shuangming ; song, li] univ sci & technol china, cas ctr excellence nanosci, natl synchrotron radiat lab, hefei 230029, anhui, peoples r china
关键词	Fe-n-x Functionalized Carbon Nanotubes Ray-absorption Spectroscopy In-situ Fuel-cells Doped Carbon Bifunctional Electrocatalysts c Electrocatalysts Mesoporous Carbon Graphene Oxide
学科领域	Chemistry, Physical
资助者	Australian Research Council [DP150102044, DP150102025]; WA X-ray Surface Analysis Facility; Australian Research Council LIEF grant [LE120100026]
收录类别	SCI
语种	英语
WOS记录号	WOS:000423197900020
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79570
专题	中国科学院金属研究所
通讯作者	Jiang, SP (reprint author), Curtin Univ, Fuels & Energy Technol Inst, Dept Chem Engn, Perth, WA 6102, Australia.
推荐引用方式 GB/T 7714	Cheng, Y,Liang, J,Veder, JP,et al. Iron Oxide Nanoclusters Incorporated into Iron Phthalocyanine as Highly Active Electrocatalysts for the Oxygen Reduction Reaction[J]. CHEMCATCHEM,2018,10(2):475-483.
APA	Cheng, Y.,Liang, J.,Veder, JP.,Li, M.,Chen, SM.,...&Jiang, SP .(2018).Iron Oxide Nanoclusters Incorporated into Iron Phthalocyanine as Highly Active Electrocatalysts for the Oxygen Reduction Reaction.CHEMCATCHEM,10(2),475-483.
MLA	Cheng, Y,et al."Iron Oxide Nanoclusters Incorporated into Iron Phthalocyanine as Highly Active Electrocatalysts for the Oxygen Reduction Reaction".CHEMCATCHEM 10.2(2018):475-483.