Polymer Electrolyte Fuel Cell Modeling Considering Catalyst Activity and a Microscopic Reaction Phenomenon: Coverage of Oxygen-Containing Species

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Nuttapol Limjeerajarus³  Hidenori Ohashi²  Tatsunori Yanagimoto¹  Taichi Ito²  Takeo Yamaguchi¹ 

[1] Department of Chemical System Engineering, The University of Tokyo;Chemical Resources Laboratory, Tokyo Institute of Technology;Department of Automotive Engineering, Thai-Nichi Institute of Technology

关键词: PEFCs;    Modeling;    ORR Activity;    Coverage;    Adsorption of Oxygen-Containing Species;   

DOI  :  10.1252/jcej.09we056

来源: Maruzen Company Ltd

【 摘 要 】

References(24)Cited-By(1)A model in which the reaction parameters of catalyst layers from microscopic to macroscopic scales are the main focus was systematically developed for polymer electrolyte fuel cells (PEFCs). The effect of oxygen-containing species adsorbed on the Pt surface at the microscopic three-phase boundary (Qox), which suppresses the oxygen reduction reaction (ORR), was taken into account in the PEFC model. Qox was expressed as a reaction parameter in terms of the coverage factor, and was included in the Tafel reaction equation. The advantages of our model were verified by carrying out the model validation, in which the results of cell performance obtained by simulation agreed very well with experimented results. Because of this key improvement, the developed model was more realistic and accurate. The simulation results also demonstrates that the effect of adsorbed oxygen-containing species is a very important reaction parameter that influences cell performance and must be considered in order to achieve high-performance PEFCs.

【 授权许可】

Unknown