Affiliation:
1. Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials Department of Physics Jinan University Guangzhou Guangdong 510632 P. R. China
2. Instrumental Analysis and Research Center Sun Yat‐sen University Guangzhou Guangdong 510275 P. R. China
Abstract
AbstractIt is a good idea for efficient production of hydrogen to use ethanol oxidation reaction (EOR) in place of oxygen evolution reaction (OER) in water electrolysis process. Ni‐based non‐precious electrocatalysts are widely used in the conversion of ethanol to acetic acid. Here, different selenide heterostructures (NiCoSe, NiFeSe, and NiCuSe) are prepared in which Ni sites are regulated by transition metal. The valence state of Ni is NiCuSe < NiCoSe < NiFeSe in the three heterojunctions. NiCoSe shows the optimized charge distribution of Ni sites and outstanding catalytic activity. The effective modulations lead to optimized d‐band center and facilitates both adsorption and desorption of reaction intermediates, which improves the kinetics of EOR. The results of this work prove that with appropriate designed catalyst it is possible to replace kinetically slow OER with faster EOR in water electrolysis to produce hydrogen.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Postdoctoral Research Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
7 articles.
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