One stone two birds: Vanadium doping as dual roles in self-reduced Pt clusters and accelerated water splitting
文献类型：期刊论文
| 作者 | Feng, Yihan; Li, Zichuang; Li, Shanlin; Yang, Minghui; Ma, Ruguang; Wang, Jiacheng |
| 刊名 | JOURNAL OF ENERGY CHEMISTRY
 |
| 出版日期 | 2022 |
| 卷号 | 66页码:493-501 |
| 关键词 | LAYERED DOUBLE HYDROXIDE ELECTROCATALYSTS EFFICIENT |
| 英文摘要 | Integrating active Pt clusters into transition-metal oxides with water-dissociation ability is effective to prepare a bifunctional electrocatalyst for water splitting in alkaline. However, the additional utilization of a reductant and/or the operation at the elevating temperature causes the over-growth and agglomer-ation of Pt clusters, thus losing the high catalytic performance. Herein, we report that V dopant not only favors self-reducing Pt clusters on NiFe layered double hydroxide (LDH) (Pt/NiFeV) at room temperature, but also regulates interfacial charge redistribution to enhance the water-splitting performance. Experimental and theoretical studies reveal that V dopant into NiFe LDH triggers more electrons to trans-fer to adjacent Fe atoms, thus leading to a higher reducing ability compared to that without V-doping. When used as water-splitting electrocatalyst, V doping promotes electron loss of Pt clusters in Pt/ NiFeV, optimizing the free energy of hydrogen adsorption and proton recombination kinetics at the cath-ode. Meanwhile, it also moves the d-band center of Ni away from the Fermi level to optimize the adsorp-tion of *OH intermediates and facilitate the desorption of oxygen molecules at the anode. Thereby, Pt/ NiFeV exhibits much higher bifunctional performance than V-free Pt/NiFe LDH toward both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). This work can spark inspiration of design-ing other bifunctional electrocatalysts for energy conversion and storage. (c) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21226]  |
| 专题 | 2021专题_期刊论文 2022专题_期刊论文 |
| 作者单位 | 1.Ma, RG 2.Wang, JC (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 3.Wang, JC (corresponding author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Feng, Yihan,Li, Zichuang,Li, Shanlin,et al. One stone two birds: Vanadium doping as dual roles in self-reduced Pt clusters and accelerated water splitting[J]. JOURNAL OF ENERGY CHEMISTRY,2022,66:493-501. |
| APA | Feng, Yihan,Li, Zichuang,Li, Shanlin,Yang, Minghui,Ma, Ruguang,&Wang, Jiacheng.(2022).One stone two birds: Vanadium doping as dual roles in self-reduced Pt clusters and accelerated water splitting.JOURNAL OF ENERGY CHEMISTRY,66,493-501. |
| MLA | Feng, Yihan,et al."One stone two birds: Vanadium doping as dual roles in self-reduced Pt clusters and accelerated water splitting".JOURNAL OF ENERGY CHEMISTRY 66(2022):493-501. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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