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Citation: Xiao Xiu-Feng, Liu Rong-Fang, Zhu Ze-Shan. Ni-W-WC Composite Coating Electrode for Hydrogen Evolution in Alkaline Solution[J]. Acta Physico-Chimica Sinica, ;1999, 15(08): 742-746. doi: 10.3866/PKU.WHXB19990814 shu

Ni-W-WC Composite Coating Electrode for Hydrogen Evolution in Alkaline Solution

1.
Department of Chemistry,Fujian Teacher's University,Fujian 350007

Received Date: 4 September 1998
Available Online: 15 August 1999

The Ni-W-WC composite-coating electrode was prepared by electrolytic composite-deposition. The characterization for the hydrogen evolution reaction (HER) was compared in 7 mol• L -1 KOH solution by steady-state polarization and AC impedance technique. The results show that the composite-coating electrode is catalytically more active than Ni-W electrode. The electro- catalytic activities of the composite-coating electrode are attributed to the increase in the real surface areas and the decrease in the standard free energy of activation. The stability test of the composite-coating electrode shows excellent stability during long-term continuous electrolysis and od resistance against frequent power interruption on this electrode.
- Composite electrode,
- Electroctalysis,
- Hydrogen evolution
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