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Preparation of Ni-Cr-Cu alloy membrane electrode and its hydrogen evolution performance
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TB3

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the Natural Science Foundation of China (51704221) and Outstanding youth fund of Wuhan Polytechnic University (2018J05).

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    Abstract:

    Ni-Cr-Cu ternary alloys electrode materials were prepared by activation reaction sintering method with tinplate, Ni powder and Cr powder as raw materials. The phase, constitute morphology and element component of the electrode were characterized by XRD, SEM, EDS. The electrocatalytic hydrogen evolution performance of alloy electrode materials was investigated by cyclic voltammetry curve, linear polarization curve, potentiodynamic polarization curve, electrochemical impedance spectrum. The results show that the Ni-Cr-Cu ternary alloy film electrode has excellent hydrogen evolution performance, and the content of Cr can improve the hydrogen evolution catalytic activity. At room temperature, Ni30wt%Cr-Cu ternary alloy electrode material is 6mol/L. The catalytic activity of hydrogen evolution in KOH solution is the strongest, the hydrogen evolution overpotential is only -0.13 V (vs SCE), the potential is -0.145 V (vs SCE) as the exchange current density of 10mA/cm2, and the open circuit potential (η) of the electrode material is from 0.05 to 0.02 V after 36000 s, which only increased by 0.03 V, indicating that the hydrogen evolution electrode has good chemical stability.

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[李喜德,Cao Dehua, Feng Xindong, Zhang Chuo, Zou Haoran, Li Bin, Li Juying, Xiong Lieqiang, Zheng Xiao, Yang Junsheng. Preparation of Ni-Cr-Cu alloy membrane electrode and its hydrogen evolution performance[J]. Rare Metal Materials and Engineering,2021,50(8):2905~2912.]
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History
  • Received:September 01,2020
  • Revised:October 23,2020
  • Adopted:November 23,2020
  • Online: September 07,2021
  • Published: August 31,2021