Effects of compression on GDL microstructure by high-resolution X-ray Computed Tomography

Navvab Khajeh Hosseini D., Takashi Sasabe, Takashi Tokumasu, Ugur Pasaogullari

研究成果: Conference contribution

抄録

Transport phenomena within gas diffusion layers (GDLs) of of proton exchange membrane fuel cells (PEMFCs) are crucially important for an optimum PEM fuel cell performance. The microstructure properties of the GDLs, such as porosity, tortuosity and pore size distribution govern the transport of fluid, heat and charge. Additionally, PEM fuel cells are assembled under high compression pressure to minimize the contact resistance between components. The compression significantly alters the microstructure of the GDLs, and affects the cell performance substantially by blocking the pathways of liquid and gas species to and from the catalyst layer reaction sites. This study gives detailed understanding on the effect of compression on a GDL microstructure using high resolution X-ray Computed Tomography. Porosity distributions were shown when the GDL is compressed. A significant GDL penetration into the gas channel was observed at high compression pressures.

本文言語English
ホスト出版物のタイトルASME 2013 11th Int. Conf. on Fuel Cell Science, Eng. and Technology Collocated with the ASME 2013 Heat Transfer Summer Conf. and the ASME 2013 7th Int. Conf. on Energy Sustainability, FUELCELL 2013
DOI
出版ステータスPublished - 2013 12 1
イベントASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2013 Collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 7th International Conference on Energy Sustainability - Minneapolis, MN, United States
継続期間: 2013 7 142013 7 19

出版物シリーズ

名前ASME 2013 11th Int. Conf. on Fuel Cell Science, Eng. and Technology Collocated with the ASME 2013 Heat Transfer Summer Conf. and the ASME 2013 7th Int. Conf. on Energy Sustainability, FUELCELL 2013

Other

OtherASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2013 Collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 7th International Conference on Energy Sustainability
CountryUnited States
CityMinneapolis, MN
Period13/7/1413/7/19

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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