高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (9): 1216.

• 论文 • 上一篇    下一篇

SPE-防水气体扩散电极研究(Ⅱ)--Co的氧化及稳定性

严河清, 陆君涛, 王鄂凤   

  1. 武汉大学化学系, 武汉, 430072
  • 收稿日期:1990-04-03 出版日期:1991-09-24 发布日期:1991-09-24
  • 通讯作者: 严河清

Studies on Nafion-Pt Hydrophobic Gas Diffusing Electrode (Ⅱ)--CO Oxidation and its Stability

Yan He-qing, Lu Jun-tao, Wang E-feng   

  1. Department of Cllemistry, Wuhan University, Wuhan, 430072
  • Received:1990-04-03 Online:1991-09-24 Published:1991-09-24

摘要: 考查了CO在Nation-Pt防水气体扩散电极上的电化学氧化行为,发现CO氧化电流在酸性溶液比碱性溶液中大,恒电位下电机电流在几小时内随时间增加而减小,最后至稳定值,决定此稳态电流值的控制步骤是水在Nafion膜中的扩散速度,这些特征可用Nation膜离子选择性解释。

关键词: 一氧化碳氧化, Nafion膜, 防水气体扩散电极

Abstract: The current of COoxidation at the Nafion-Pt hydrophobic electrode is higher in 0.5 mol/L H2SO4than in 1mol/L NaOH and decays with time over a few hours till reaching a steady state. These observation can be explained in terms of the ion-selectivity of Nafion and the Limited transport rate of water across the membrane.

Key words: Oxidation of carbon monoxide, Nafion membrane, Hydrophobic gas diffusing electrode

TrendMD: