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Trends in activity for the oxygen evolution reaction on transition metal (M = Fe, Co, Ni) phosphide precatalysts
Xu, JY; Li, JJ; Xiong, DH; Zhang, BS; Liu, YF; Wu, KH; Amorim, I; Li, W; Liu, LF; Liu, LF (reprint author), Int Iberian Nanotechnol Lab, Ave Mestre Jose Veiga, P-4715330 Braga, Portugal.
2018-04-14
发表期刊CHEMICAL SCIENCE
ISSN2041-6520
卷号9期号:14页码:3470-3476
摘要Transition metal phosphides (TMPs) have recently emerged as a new class of pre-catalysts that can efficiently catalyze the oxygen evolution reaction (OER). However, how the OER activity of TMPs varies with the catalyst composition has not been systematically explored. Here, we report the alkaline OER electrolysis of a series of nanoparticulate phosphides containing different equimolar metal (M = Fe, Co, Ni) components. Notable trends in OER activity are observed, following the order of FeP < NiP < CoP < FeNiP < FeCoP < CoNiP < FeCoNiP, which indicate that the introduction of a secondary metal(s) to a mono-metallic TMP substantially boosts the OER performance. We ascribe the promotional effect to the enhanced oxidizing power of bi-and tri-metallic TMPs that can facilitate the formation of MOH and chemical adsorption of OH- groups, which are the rate-limiting steps for these catalysts according to our Tafel analysis. Remarkably, the tri-metallic FeCoNiP pre-catalyst exhibits exceptionally high apparent and intrinsic OER activities, requiring only 200 mV to deliver 10 mA cm(-2) and showing a high turnover frequency (TOF) of >= 0.94 s(-1) at the overpotential of 350 mV.; Transition metal phosphides (TMPs) have recently emerged as a new class of pre-catalysts that can efficiently catalyze the oxygen evolution reaction (OER). However, how the OER activity of TMPs varies with the catalyst composition has not been systematically explored. Here, we report the alkaline OER electrolysis of a series of nanoparticulate phosphides containing different equimolar metal (M = Fe, Co, Ni) components. Notable trends in OER activity are observed, following the order of FeP < NiP < CoP < FeNiP < FeCoP < CoNiP < FeCoNiP, which indicate that the introduction of a secondary metal(s) to a mono-metallic TMP substantially boosts the OER performance. We ascribe the promotional effect to the enhanced oxidizing power of bi-and tri-metallic TMPs that can facilitate the formation of MOH and chemical adsorption of OH- groups, which are the rate-limiting steps for these catalysts according to our Tafel analysis. Remarkably, the tri-metallic FeCoNiP pre-catalyst exhibits exceptionally high apparent and intrinsic OER activities, requiring only 200 mV to deliver 10 mA cm(-2) and showing a high turnover frequency (TOF) of >= 0.94 s(-1) at the overpotential of 350 mV.
部门归属[xu, junyuan ; li, junjie ; xiong, dehua ; amorim, isilda ; li, wei ; liu, lifeng] int iberian nanotechnol lab, ave mestre jose veiga, p-4715330 braga, portugal ; [zhang, bingsen ; liu, yuefeng ; wu, kuang-hsu] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [wu, kuang-hsu] univ new south wales, sch chem engn, sydney, nsw 2052, australia
关键词Electrochemical Water Oxidation Bifunctional Catalysts Highly Efficient Double Hydroxide Nickel Foam Electrocatalysts Nanoparticles Nanosheets Graphene Insights
学科领域Chemistry, Multidisciplinary
资助者European Horizon project "CritCat" [686053]; Portuguese Foundation of Science and Technology (FCT) [IF/01595/2014, PTDC/CTM-ENE/2349/2014, 016660]
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/321006/79364
专题中国科学院金属研究所
通讯作者Liu, LF (reprint author), Int Iberian Nanotechnol Lab, Ave Mestre Jose Veiga, P-4715330 Braga, Portugal.
推荐引用方式
GB/T 7714
Xu, JY,Li, JJ,Xiong, DH,et al. Trends in activity for the oxygen evolution reaction on transition metal (M = Fe, Co, Ni) phosphide precatalysts[J]. CHEMICAL SCIENCE,2018,9(14):3470-3476.
APA Xu, JY.,Li, JJ.,Xiong, DH.,Zhang, BS.,Liu, YF.,...&Liu, LF .(2018).Trends in activity for the oxygen evolution reaction on transition metal (M = Fe, Co, Ni) phosphide precatalysts.CHEMICAL SCIENCE,9(14),3470-3476.
MLA Xu, JY,et al."Trends in activity for the oxygen evolution reaction on transition metal (M = Fe, Co, Ni) phosphide precatalysts".CHEMICAL SCIENCE 9.14(2018):3470-3476.
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