中国科学院长春光学精密机械与物理研究所

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	Nanoflower-like high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxides for oxygen evolution
	M. Y. Shi, T. M. Tang, L. Y. Xiao, J. Y. Han, X. Bai, Y. H. Sun, S. Y. Chen, J. R. Sun, Y. Y. Ma and J. Q. Guan
	2023
发表期刊	Chemical Communications
ISSN	1359-7345
卷号	59期号:80页码:11971-11974
摘要	High-entropy materials (HEMs) have potential application value in electrocatalytic water splitting because of their unique alloy design concept and significant mixed entropy effect. Here, we synthesize a high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxide on nickel foam (NF) by a solvothermal method. The flower-like structure of FeNiCrMnCoOOH/NF can provide abundant active sites, thus improving the oxygen evolution reaction (OER) activity. In 1 M KOH, the FeNiCrMnCoOOH/NF shows an ultra-low overpotential (eta 10) of 201 mV for the OER, superior to FeNiCrMnAlOOH/NF, FeNiCrMnCuOOH/NF, FeNiCrMnMoOOH/NF, and FeNiCrMnCeOOH/NF. In addition, it exhibits a low eta 10 of 223 mV in 0.5 M NaCl + 1 M KOH and excellent stability. Electrochemical impedance spectroscopy measurements indicate that the synergistic effect between multiple metals accelerates charge transfer, while in situ Raman measurements reveal that NiOOH is a key active species for the OER. This work is of great significance for the construction of high-entropy (oxy)hydroxides for seawater electrolysis. In 1 M KOH and in 0.5 M NaCl + 1 M KOH, the overpotential of nanoflower-like FeNiCrMnCoOOH/NF is 201 and 223 mV, respectively, at a current density of 10 mA cm-2.
DOI	10.1039/d3cc04023b
URL	查看原文
收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67840
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	M. Y. Shi, T. M. Tang, L. Y. Xiao, J. Y. Han, X. Bai, Y. H. Sun, S. Y. Chen, J. R. Sun, Y. Y. Ma and J. Q. Guan. Nanoflower-like high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxides for oxygen evolution[J]. Chemical Communications,2023,59(80):11971-11974.
APA	M. Y. Shi, T. M. Tang, L. Y. Xiao, J. Y. Han, X. Bai, Y. H. Sun, S. Y. Chen, J. R. Sun, Y. Y. Ma and J. Q. Guan.(2023).Nanoflower-like high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxides for oxygen evolution.Chemical Communications,59(80),11971-11974.
MLA	M. Y. Shi, T. M. Tang, L. Y. Xiao, J. Y. Han, X. Bai, Y. H. Sun, S. Y. Chen, J. R. Sun, Y. Y. Ma and J. Q. Guan."Nanoflower-like high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxides for oxygen evolution".Chemical Communications 59.80(2023):11971-11974.

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