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논문 기본 정보

자료유형
학술저널
저자정보
Li Yuan (Sichuan University of Science & Engineering) Chen Gao (Sichuan University of Science and Engineering) Chunyan Zeng (Sichuan University of Science and Engineering) Yue Lu (Sichuan University of Science & Engineering) Xuzheng Qian (Wuhan Research Institute of Materials Protection) Fuyi Chen (Northwestern Polytechnical University)
저널정보
성균관대학교 성균나노과학기술원 NANO NANO Vol.12 No.10
발행연도
2017.1
수록면
85 - 95 (11page)

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Porous Ni–Cu alloy electrodes were conveniently fabricated by galvanic displacement reaction (GDR) between Ni foam and copper ion in copper ion solutions, followed by cyclic voltammetry (CV) treatment to form a hierarchical microstructure. The electrocatalytic performance of prepared electrodes in terms of the hydrogen evolution reaction (HER) was investigated in a 1 mol/L KOH solution at room temperature. Different copper ion solutions were tested to determine the best copper ion solution and the optimum GDR time, and experimental results show that all cathodes obtained by GDR between Ni foam and copper ion exhibit a superior HER activity over the pure Ni foam cathode, while the HER activity of electrode obtained by GDR between Ni foam and copper ion in 0.5 mol/L CuCl2 solutions for 1 h is the highest. Furthermore, it is found that the HER activity of electrode obtained by GDR between Ni foam and copper ion in 0.5 mol/L CuCl2 solutions for 1 h can be further enhanced through a CV treatment and the optimal number of CV cycles is 3, which can be attributed to a hierarchical microstructure (a needle-like nano–microstructure formed on the surface of the electrode during the CV treatment process).

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