Trends in activity for the oxygen evolution reaction on transition metal (M = Fe, Co, Ni) phosphide precatalysts
文献类型：期刊论文
| 作者 | 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. |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2018-04-14 |
| 卷号 | 9期号:14页码:3470-3476 |
| 关键词 | Electrochemical Water Oxidation Bifunctional Catalysts Highly Efficient Double Hydroxide Nickel Foam Electrocatalysts Nanoparticles Nanosheets Graphene Insights |
| ISSN号 | 2041-6520 |
| 英文摘要 | 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. |
| 学科主题 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | European Horizon project "CritCat" [686053]; Portuguese Foundation of Science and Technology (FCT) [IF/01595/2014, PTDC/CTM-ENE/2349/2014, 016660] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79364]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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