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唐长斌.电镀镍中间层对钛基二氧化铅阳极性能的影响[J].稀有金属材料与工程(英文),2019,48(1):143~151.[Tang Chang-bin.Effect of electroplating nickel inter-layer on performance of Ti-based lead dioxide electrodes[J].Rare Metal Materials and Engineering,2019,48(1):143~151.]
Effect of electroplating nickel inter-layer on performance of Ti-based lead dioxide electrodes
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Received:May 16, 2017  Revised:July 11, 2017
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Key words: nickel intermediate layer  electrode life  energy consumption  electrocatalysis
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Tang Chang-bin  
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Abstract:
      A nickel intermediate layer was firstly electrodeposited onto the titanium substrate by cathodic electroplating, then the β-PbO2 coating was electrosynthesized by anodic oxidation. The resulting Ti/Ni/PbO2 was compared with the Ti/PbO2 electrodes without intermediate layer. The effect of plating nickel intermediate layer on the structure and performance of PbO2-coated electrodes were investigated by microstructure characterization, accelerated life test in 1mol/L H2SO4 solution, electrochemical performance and electro-oxidation behavior of simulated phenol wastewater. The results indicated that the introduction of nickel electroplating intermediate layer leads to the grain refinement of the surface active β-PbO2 coating, thus enhancing the catalytic performance of PbO2-coated electrodes. Furthermore, the Ni intermediate improves the conductivity of the electrode, thus significantly reducing cell voltage, enhancing potential uniform distribution of the electrode surface, extending the electrode lifetime and reducing the energy consumption of electrocatalytic oxidation of simulated phenol wastewater. Besides, the introduction of nickel inter-layer might enhance the catalytic performance of the electrode.