Studies on SPE-Hydrophobic Gas Diffusing Electrodes (I) --Electrode Structure and Reduction of Oxygen

作     者：Yan Heqing, Lu Juntao Wang E’feng (Department of Chemistry, Wuhan University, Wuhan) Yan Heqing, Lu Juntao Wang E’feng (Department of Chemistry, Wuhan University, Wuhan)

出 版 物：《Chemical Journal of Chinese Universities》 (高等学校化学学报(英文版))

年 卷 期：1988年第3期

页      面：46-51页

学科分类：07[理学] 0703[理学-化学] 

主　　题：SPE-electrode gas diffusing electrode oxygen cathode 

摘      要：A type of SPE-electrode, the SPE-hydrophobic gas diffusing electrode was reported and its characteristics were discussed,The reduction reaction of oxygen was examined at the Nafion-hydrophobic gas diffusing electrode with the counter electrode in contact with 1mol/L H2SO4, 1mol/L NaOH and distilled water, respectively. When contact with H2SO4 the electrode was found to behave just like a conventional gas diffusing electrode facing tree electrolyte, while contact with NaOH, however, the performance of the electrode decayed rapidly in the course of operation and no steady state could be reached. These observations and the results of apparent capacitance measurement reveal that the working electrode interface is the interface between the catalyst and the free electrolyte contained in the catalytic layer and that the electrode performance was seriously influenced by the selective ion-permeability of SPE and liquid phase resistance within the catalytic layer.