Electrochemical characteristics of the amorphous-nanocrystal Ni-Mo cathodes in sodium hydroxide solution

Ning Li; Jianmeng Huang; Weizeng Chen; Bin Wang
January 2016
Key Engineering Materials;2016, Vol. 667, p280
Academic Journal
The amorphous-nanocrystal Ni-Mo deposits were obtained by electrodeposition in alkaline nickel carbonate solution. X-ray diffraction (XRD), scanning electron microscopy (SEM) and modern technologies were used to describe the content, microstructure and morphology of the deposits. The electrochemical characteristics of Ni-Mo deposits were electrolyzed in 33 °C, 7 mol/L NaOH electrolytic solutions. The results showed that when I was 100 mA·cm-2, the hydrogen evolution potential of Ni-Mo21.76 was lower than amorphous Ni-Mo26.36 and 250mV lower than the nanocrystal Ni cathode. And the Ni-Mo deposits with more amorphous phase content would be in lower hydrogen evolution overpotential, a higher exchange current density, and a better electrolytic stability. These due to the amorphous combined with nanocrystal, lager contact surface and binding energy of Ni-Mo structure.


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