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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
ISSN1867-3880
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
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.
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