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Citation: HUANG Ling, YANG Fang-Zu, XU Shu-Kai, ZHOU Shao-Min. Structure of Nanocrystalline Ni-Mo-Co Alloy and Electrocatalytic Hydrogen Evolution on Electrode Thereof[J]. Chinese Journal of Applied Chemistry, ;2001, 18(10): 768-771. shu

Structure of Nanocrystalline Ni-Mo-Co Alloy and Electrocatalytic Hydrogen Evolution on Electrode Thereof

1.
State Key Laboratory for Physical Chemistry of the Solid Surface, Deptartment of Chemistry, Xiamen University, Xiamen 361005

Received Date: 5 December 2000
Available Online: 22 May 2001
Fund Project: 国家自然科学基金(20073037) (20073037)

The nanocrystalline nickel-molybdenum-cobalt alloy deposits were obtained by electrodeposition method. The structures of the deposits were analyzed by XRD and XPS; considerable lattice deformation in alloy occured and only one diffraction peak was recorded on XRD spectrum. The XPS results of nanocrystalline Ni-Mo-Co deposit indicated that the nickel and molybdenum and cobalt coexist in metal state of the deposits, with binding energy being increased in some extent. The nanocrystalline Ni-Mo-Co alloy deposit electrode offered better electrocatalytic hydrogen evolution than nanocrystalline Ni Mo alloy electrode. The electrochemical impedance spectra of the nanocrystalline Ni-Mo-Co alloy electrode indicated that hydrogen evolution in 30%(m/m) KOH follows Volmer-Tafel mechanism at lower potential, but at higher potential it follows Volmer Heyrovsky mechanism.
- nanocrystalline Ni-Mo-Co alloy,
- electrodeposition,
- structure,
- hydrogen evolution
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