| CeO2修饰Ni3S2纳米片用于高效电催化析氧 |
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| 引用本文： | 吴倩,高庆平,孙丽梅,郭焕美,台夕市,李丹,刘莉,凌崇益,孙旭平.CeO2修饰Ni3S2纳米片用于高效电催化析氧[J].催化学报,2021,42(3):482-489,中插48-中插52. |
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| 作者姓名： | 吴倩 高庆平 孙丽梅 郭焕美 台夕市 李丹 刘莉 凌崇益 孙旭平 |
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| 作者单位： | 潍坊学院化学化工学院, 山东潍坊261061;潍坊职业学院化学工程学院, 山东潍坊262737;东南大学物理学院, 江苏南京211189;电子科技大学基础与前沿研究院, 四川成都610054 |
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| 基金项目： | 潍坊高技术区科技惠民计划;and the Science and Technology Huimin Plan of Weifang High-tech Zone ;潍坊市科技发展计划;This work was supported by the National Natural Science Foundation of China ;国家自然科学基金;the Science and Technology Development Plan of Weifang City |
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| 摘 要： | 电化学水分解制氢作为重要的生产氢能的新能源技术,包括氢气析出反应(HER)和氧气析出反应(OER).然而,OER进行的是多步电子转移过程,动力学过程缓慢且过电位高,严重制约了电解水制氢的发展.因此开发低成本、高效稳定的非贵金属催化剂替代贵金属催化剂(RuO2,IrO2)来降低过电位,减少能源消耗十分必要.Ni3S2由于...
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| 关 键 词： | Ni3S2-CeO2纳米片 氧析出反应 碱性条件 密度泛函理论计算 |
Facilitating active species by decorating Ce O2 on Ni3S2 nanosheetsfor efficient water oxidation electrocatalysis |
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| Qian Wu,Qingping Gao,Limei Sun,Huanmei Guo,Xishi Tai,Dan Li,Li Liu,Chongyi Ling,Xuping Sun.Facilitating active species by decorating Ce O2 on Ni3S2 nanosheetsfor efficient water oxidation electrocatalysis[J].Chinese Journal of Catalysis,2021,42(3):482-489,中插48-中插52. |
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| Authors: | Qian Wu Qingping Gao Limei Sun Huanmei Guo Xishi Tai Dan Li Li Liu Chongyi Ling Xuping Sun |
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| Institution: | (Department of Chemistry and Chemical Engineering,Weifang University,Weifang 261061,Shandong,China;Department of Chemical Engineering,Weifang Vocational College,Weifang 262737,Shandong,China;School of Physics,Southeast University,Nanjing 211189,Jiangsu,China;Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 610054,Sichuan,China) |
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| Abstract: | In the pursuit of stable, high performance Ni-based oxygen evolution reaction (OER) electrocata-lysts, modifying the local chemical compositions or fabricating hybrid nanostructures to generate abundant interfaces for improving the water oxidation activity of electrocatalysts has emerged as an effective strategy. Herein, we report the facile development of a Ni3S2-CeO2 hybrid nanostructure via an electrodeposition method. Benefiting from the strong interfacial interaction between Ni3S2 and CeO2, the electron transfer is notably improved and the water oxidation activity of Ni3S2 nanosheets is significantly enhanced. In 1.0 M KOH, the Ni3S2-CeO2 electrocatalyst achieves a current density of 20 mA cm–2 at a low overpotential of 264 mV, which is 92 mV lower than that of Ni3S2. Moreover, Ni3S2-CeO2 exhibits superior electrochemical stability. Density functional theory calculations demonstrate that the enhanced OER electrocatalytic performance of Ni3S2-CeO2 can be ascribed to an increase in the binding strength of the reaction intermediates at the Ni3S2-CeO2 interface. |
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| Keywords: | Ni3S2-CeO2 nanosheet Oxygen evolution reaction Alkaline conditions Density functional theory calculations |
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