高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 118.

• Chemistry in Energy Sciences • 上一篇    下一篇

The Mass Transfer of Proton on Meniscus Nafion/Pt/HOPG Electrode

XIAO Xiao-Ming, ZENG Yue, XIE Qing-Ji, YU Shang-Ci, LI Ze-Lin   

  1. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081
  • 出版日期:2000-12-31 发布日期:2000-12-31

The Mass Transfer of Proton on Meniscus Nafion/Pt/HOPG Electrode

XIAO Xiao-Ming, ZENG Yue, XIE Qing-Ji, YU Shang-Ci, LI Ze-Lin   

  1. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Proton-exchange membrane fuel cells (PEMFCs) recently have been studied extensively because of their high performance[1-3]. Since a small contacting area between the platinum catalyst and polymer electrolyte in PEMFCs, the platinum utilization is very important for this kind of cells. In order to improve the platinum utilization, Nafion solution is often impregnated into the gas-diffusion electrodes of PEMFCs. We introduced a partially immersed Nafion-coated electrode, Nafion/Pt/HOPG(highly oriented pyrolytic graphite) as a model electrode in PEMFC, to examine the effects of Nafion coating on the mass transport of hydrogen and proton at the meniscus and supermeniscus formed on the electrodes.

Abstract:

Proton-exchange membrane fuel cells (PEMFCs) recently have been studied extensively because of their high performance[1-3]. Since a small contacting area between the platinum catalyst and polymer electrolyte in PEMFCs, the platinum utilization is very important for this kind of cells. In order to improve the platinum utilization, Nafion solution is often impregnated into the gas-diffusion electrodes of PEMFCs. We introduced a partially immersed Nafion-coated electrode, Nafion/Pt/HOPG(highly oriented pyrolytic graphite) as a model electrode in PEMFC, to examine the effects of Nafion coating on the mass transport of hydrogen and proton at the meniscus and supermeniscus formed on the electrodes.

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