PREPARATION OF NiCu ELECTRODE BY PLASMA SPRAYING AND ITS HYDROGEN EVOLUTION PERFORMANCE

Wang Junru; Liu Taikai; Mao Jie; Deng Chunming; Song Chen; Wang Yinxiao

doi:10.19912/j.0254-0096.tynxb.2023-1035

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 700-708. DOI: 10.19912/j.0254-0096.tynxb.2023-1035

PREPARATION OF NiCu ELECTRODE BY PLASMA SPRAYING AND ITS HYDROGEN EVOLUTION PERFORMANCE

Wang Junru^1,2, Liu Taikai¹, Mao Jie¹, Deng Chunming¹, Song Chen¹, Wang Yinxiao²

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Abstract

Aiming at the problems of low activity and poor stability of electrode materials for electrolytic water hydrogen evolution, research on high stability catalytic materials was carried out. By adjusting the content of NiCu, the Pt-like electronic structure is constructed, and the activity and stability of hydrogen evolution electrode materials are improved. Different proportions of mixed powder of NiCu were deposited on Ni substrate by atmospheric plasma spraying, and controllable electrode samples were prepared. The influence of Cu content on hydrogen evolution performance of Ni electrode was explored by electrochemical test and physical property characterization. The results show that the change of Cu content significantly affects the hydrogen evolution activity of electrode samples. When the Cu content is 65% in 30% KOH solution, the overpotential of the hydrogen evolution reaction with the driving current density of 100 mA/cm² is the lowest, which is 400 mV, which is lower than that of pure nickel by more than 20%. After 2000 cycles, the catalytic performance of the electrode has no obvious change, and the NiCu alloy electrode has excellent stability under alkaline conditions.

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catalyst / hydrogen evolution reaction / transition metals / atmospheric plasma spraying

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Wang Junru, Liu Taikai, Mao Jie, Deng Chunming, Song Chen, Wang Yinxiao. PREPARATION OF NiCu ELECTRODE BY PLASMA SPRAYING AND ITS HYDROGEN EVOLUTION PERFORMANCE[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 700-708 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1035

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