电化学2006，Vol.12Issue(2)：148-153,6.
DMFC中甲醇渗透的电化学研究
An Electrochemical Investigation of Methanol Crossover in DMFCs
摘要
Abstract
Methanol crossover and its effect on the open-circuit voltage (OCV) in DMFCs were studied using cyclic voltammetry and chronoamperometry under stationary condition and at ambient temperature . An H-shape cell was constructed and a simulative DMFC test was carried out to investigate methanol crossover through Nafion(R) 117 from anode to cathode. The results revealed that the amount of methanol in the cathode side is dependent upon the time of penetration. As the concentration of methanol increased, the hydrogen adsorption-desorption on the surface of electrode was suppressed and a shoulder peak appeared during the forward sweep for methanol oxidation. The simulative DMFC test also showed that the methanol crossover caused a sudden decline in the OCV.关键词
甲醇渗透/甲醇氧化/循环伏安/计时电流Key words
Methanol crossover/Methanol oxidation/Cyclic voltammetry/Chronoamperometry分类
信息技术与安全科学引用本文复制引用
游梦迪,程璇,刘连,张璐..DMFC中甲醇渗透的电化学研究[J].电化学,2006,12(2):148-153,6.基金项目
Supported by the Key Project, the National Natural Science Foundation of China (20433060) （20433060）
