Treatment of Heterogeneous Electrocatalysis in Modeling Transport-Reaction Phenomena in PEFCs
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概要
- 論文の詳細を見る
Thermal and water management is a critical issue in PEFCs. In this research, the thermal behavior of PEFC is focused. The objective is to understand the influence of heat on cell performance both by experiment and theoretical analysis, as well as improving cell performance and reliability. In order to investigate the theoretical behavior, especially in the catalyst layer where the electrochemical reactions occur, a detailed modeling of heterogeneous surface reaction coupled with reactant transport is needed. In this paper, a theoretical model that improves the dependency of the exchange current density with reactant concentrations by applying data from a known surface reaction steps found in catalysis is developed. Further, we compared the results of calculation model with the experimental results. The results of calculation model showed good agreement with the experimental results, especially at low current densities and the model can estimate several properties in PEFC e.g. solid phase potential distribution, electron flow vector in GDL, hydrogen and oxygen mole fraction distribution at the membrane⁄catalyst layer interface. The calculation model served as a preliminary step before the thermal-electrochemical behavior of a PEFC can be fully understood.
- 社団法人 日本伝熱学会の論文
- 2009-10-01
著者
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Okazaki Ken
東京工業大学 大学院理工学研究科 機械制御システム専攻
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Okazaki Ken
Tokyo Institute Of Technology Department Of Mechanical And Control Engineering
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FUSHINOBU Kazuyoshi
東京工業大学 大学院理工学研究科 機械制御システム専攻
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Fushinobu Kazuyoshi
Tokyo Institute Of Technology Department Of Mechanical And Control Engineering
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Fushinobu Kazuyoshi
Tokyo Institute Of Technology
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Hatakeyama Tomoyuki
Tokyo Institute Of Technology Department Of Mechanical And Control Engineering
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HASMADY Saiful
Tokyo Institute of Technology, Department of Mechanical and Control Engineering
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WACKER Manuel
Tokyo Institute of Technology, Department of Mechanical and Control Engineering
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Wacker Manuel
Tokyo Institute Of Technology Department Of Mechanical And Control Engineering
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Hasmady Saiful
Tokyo Institute Of Technology Department Of Mechanical And Control Engineering
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Okazaki Ken
Tokyo Inst. Of Technol.
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Fushinobu Kazuyoshi
Tokyo Inst. Of Technol.
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