Nanoflower-like high-entropy Ni-Fe-Cr-Mn-Co (oxy)hydroxides for oxygen evolution
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | Chemical Communications
 |
| 出版日期 | 2023 |
| 卷号 | 59期号:80页码:11971-11974 |
| ISSN号 | 1359-7345 |
| DOI | 10.1039/d3cc04023b |
| 英文摘要 | 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. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [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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