| Nb掺杂调控CoSeS多级纳米结构用于增强析氢反应 |
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| 引用本文： | 周亚楠,朱宇冉,闫新彤,曹羽宁,李佳,董斌,杨敏,李庆忠,刘晨光,柴永明. Nb掺杂调控CoSeS多级纳米结构用于增强析氢反应[J]. 催化学报, 2021, 42(3): 431-438,中插25-中插28. DOI: 10.1016/S1872-2067(20)63673-7 |
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| 作者姓名： | 周亚楠 朱宇冉 闫新彤 曹羽宁 李佳 董斌 杨敏 李庆忠 刘晨光 柴永明 |
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| 作者单位： | 中国石油大学(华东)理学院, 重质油国家重点实验室, 山东青岛266580;烟台大学化学化工学院, 理论计算化学实验室, 山东烟台264005 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China ;中央高校基本科研业务费专项基金;国家自然科学基金;and the Fundamental Research Funds for the Central Universities |
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| 摘 要： | 电催化析氢(HER)是清洁制氢的一种有效途径,对于氢经济和氢能产业的发展具有重要意义.金属掺杂是提高电催化剂本征活性的有效方法,导电基底的采用也有利于电荷传输和催化性能的整体提高.尽管已有关于硒化物作为HER催化剂的相关报道,但是合成条件有限、导电性、本征活性的影响,其电催化性能仍有提升的空间.此外,在酸性电解液中的腐...
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| 关 键 词： | 铌 硫硒化钴 氮掺杂碳纳米球 多掺杂 析氢反应 |
HierarchicalCo Se SnanostructuresassistedbyNbdopingforenhancedhydrogenevolutionreaction |
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| Ya-Nan Zhou,Yu-Ran Zhu,Xin-Tong Yan,Yu-Ning Cao,Jia Li,Bin Dong,Min Yang,Qing-Zhong Li,Chen-Guang Liu,Yong-Ming Chai. HierarchicalCo Se SnanostructuresassistedbyNbdopingforenhancedhydrogenevolutionreaction[J]. Chinese Journal of Catalysis, 2021, 42(3): 431-438,中插25-中插28. DOI: 10.1016/S1872-2067(20)63673-7 |
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| Authors: | Ya-Nan Zhou Yu-Ran Zhu Xin-Tong Yan Yu-Ning Cao Jia Li Bin Dong Min Yang Qing-Zhong Li Chen-Guang Liu Yong-Ming Chai |
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| Affiliation: | (State Key Laboratory of Heavy Oil Processing,College of Science,China University of Petroleum(East China),Qingdao 266580,Shandong,China;The Laboratory of Theoretical and Computational Chemistry,School of Chemistry and Chemical Engineering,Yantai University,Yantai 264005,Shandong,China) |
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| Abstract: | Metal doping for active sites exhibits remarkable potential for improving the hydrogen evolution reaction (HER). Multi-doping and the use of a conductive substrate can further modulate catalytic performance. Herein, Nb-CoSe well dispersed in N-doped carbon nanospheres (NCs, Nb-CoSe@NC) was synthesized to serve as a conductive substrate and facilitated good dispersion of active sites for the HER. Nb doping can also change the electronic structure of CoSe, which facilitates the activity for the HER. In order to further improve the conductivity and intrinsic activity of Nb-CoSe@NC, dual, nonmetal doping was realized through gas sulfurization to prepare hierarchical Nb-CoSeS@NC. The prepared Nb-CoSeS@NC, with a core-shell structure, exhibited a low overpotential of 115 mV at 10 mA cm–2, which is smaller than that of the most doped catalysts. In addition, NCs not only improved the dispersion and conductivity of the catalyst but also prevented metal corrosion in an electrolyte, thus facilitating the long-term stability of Nb-CoSeS@NC. Moreover, the synergistic effect of the multi-doping of Nb, S, and Se was explained. This work provides a promising, multi-doping strategy for the large-scale application of transition-metal-based electrocatalysts for the HER. |
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| Keywords: | Nb CoSeS N-doped carbon nanosphere Multi-doping Hydrogen evolution reaction |
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