中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (5): 46-49.

• 研究论文 • 上一篇    下一篇

PbO2－WC复合物阳极的研究

刘淑兰, 于德龙, 覃奇贤   

  1. 天津大学应用化学系, 天津 300072
  • 收稿日期:1994-12-27 修回日期:1995-04-06 出版日期:1995-10-10 发布日期:1995-10-10

Investigation on the PbO2-WC Composite Anode

Liu Shulan, Yu Delong, Qin Qixian   

  1. Department of Applied Chemistry, Tianjin University, Tianjin 300072
  • Received:1994-12-27 Revised:1995-04-06 Published:1995-10-10 Online:1995-10-10

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摘要： 采用复合电沉积技术制备了WC微粒弥散于PbO2中的PbO2-WC复合电极,研究了相结构及在H2SO4介质中阳极析氧反应的性能.结果表明,与不含WC微粒的PbO2电极比较,WC微粒改变了PbO2电沉积的方式,复合电极的结晶更为细小和致密,α-PbO2的含量更高,晶体产生了择优取向.该复合电极在0.5mol/LH2SO4溶液中阳极析氧的电催化活性提高近1倍,其化学稳定性和电化学稳定性良好.

关键词: PbO2, WC, 复合电极, 析氧, 电催化

Abstract: PbO2-WC composite electrode formed by dispersion of WC particles in PbO2 wasprepared by using composite electrodeposition technique.The crystallographic structure andperformance of anodic oxygen evolution reaction in sulfuric acid medium of the compositeelectrode were studied.The results show that,as compared with the PbO2 electrode contain-ing no WC particles,the PbO2-WC composite electrode is smaller in crystal grain and morecompact in structure,its α-PbO2 content is higher and crystallites are preferentially orientat-ed.Electrocatalytic activity for oxygen evolution reaction in 0.5mol/L H2SO4 solution of thecomposite electrode is increased nearly by one-fold.Chemical stability and electrochemicalstability of the composite coating are excellent.

Key words: PbO2, WC, composite electrode, oxygen evolution, electrocatalysis

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