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| NiCu/ZnO heterostructure photothermal electrocatalyst for efficient hydrogen evolution reaction |
| Author Name | Affiliation | E-mail | | JIN Haodong | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China | | | LIU Qingqing | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China | | | SHI Chaoyang | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China | | | WEI Danyang | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China | | | YU Jie | Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | XU Xuhui | Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | XU Mingli | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China | xumingli0326@126.com |
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| Abstract: A nickel-copper alloy/zinc oxide/nickel foam (NiCu/ZnO/NF) heterojunction structure composite catalyst with abundant active sites was successfully synthesized by the solvothermal-electrodeposition method. The morphology, phase composition, electric catalytic hydrogen evolution reaction (HER) performance, photothermal performance, and overall water decomposition performance of the catalyst were tested and analyzed. The experimental results demonstrated that the NiCu/ZnO/NF exhibited excellent HER catalytic performance, requiring only an overpotential of 25 mV at a current density of 10 mA·cm-2. The efficient catalytic activity can be attributed to the synergistic effect of the NiCu/ZnO heterojunction structure, which accelerates the electron transfer rate and optimizes the HER process. Moreover, the NiCu/ZnO/NF also demonstrated outstanding photothermal conversion performance, significantly reducing its HER overpotential under illumination conditions, and the overpotential decreased to 8 mV at the current density of 10 mA·cm-2. In addition, the integration of NiCu/ZnO/NF into a self-designed electrolytic cell-thermoelectric device enabled whole water decomposition reaction at a cell voltage as low as 0.88 V at a current density of 50 mA·cm-2. |
| Keywords: electrocatalyst NiCu/ZnO composite material heterojunction hydrogen evolution reaction electrolysis of water integrated thermoelectric device |
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| JIN Haodong,LIU Qingqing,SHI Chaoyang,WEI Danyang,YU Jie,XU Xuhui,XU Mingli.NiCu/ZnO heterostructure photothermal electrocatalyst for efficient hydrogen evolution reaction[J].Chinese Journal of Inorganic Chemistry,2025,41(6):1068-1082. |
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