Nitrogen‐Doped CoP Electrocatalysts for Coupled Hydrogen Evolution and Sulfur Generation with Low Energy Consumption
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- Qingwen Zhou
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
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- Zihan Shen
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
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- Chao Zhu
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
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- Jiachen Li
- Department of Chemical Engineering Northwest University Shaanxi 710069 China
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- Zhiyuan Ding
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
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- Peng Wang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
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- Feng Pan
- School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen Guangdong 518055 China
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- Zhiyong Zhang
- School of Information Science and Technology Northwest University Shaanxi 710127 China
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- Haixia Ma
- Department of Chemical Engineering Northwest University Shaanxi 710069 China
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- Shuangyin Wang
- College of Chemistry and Chemical Engineering Hunan University Changsha, Hunan 410012 China
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- Huigang Zhang
- National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Institute of Materials Engineering, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu 210093 China
説明
<jats:title>Abstract</jats:title><jats:p>Hydrogen production is the key step for the future hydrogen economy. As a promising H<jats:sub>2</jats:sub> production route, electrolysis of water suffers from high overpotentials and high energy consumption. This study proposes an N‐doped CoP as the novel and effective electrocatalyst for hydrogen evolution reaction (HER) and constructs a coupled system for simultaneous hydrogen and sulfur production. Nitrogen doping lowers the d‐band of CoP and weakens the H adsorption on the surface of CoP because of the strong electronegativity of nitrogen as compared to phosphorus. The H adsorption that is close to thermos‐neutral states enables the effective electrolysis of the HER. Only −42 mV is required to drive a current density of −10 mA cm<jats:sup>−2</jats:sup> for the HER. The oxygen evolution reaction in the anode is replaced by the oxidation reaction of Fe<jats:sup>2+</jats:sup>, which is regenerated by a coupled H<jats:sub>2</jats:sub>S absorption reaction. The coupled system can significantly reduce the energy consumption of the HER and recover useful sulfur sources.</jats:p>
収録刊行物
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- Advanced Materials
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Advanced Materials 30 (27), 2018-05-17
Wiley
