شماره ركورد كنفرانس :
4018
عنوان مقاله :
GAS PERMEABILITY AND ELECTRICAL CONDUCTIVITY PROPERTIES OF A NOVEL GAS DIFFUSION LAYER OF PEM FUEL CELLS
پديدآورندگان :
Taherian Reza rezataherian@gmail.com Chemical Material Engineering Department, Shahrood University of Technology, Shahrood, Iran , Matboo Ghorbani Mohammad mghorbani2828@yahoo.com Chemical Material Engineering Department, Shahrood University of Technology, Shahrood, Iran , Nasr Mohammad nasr@fuelcell.ir Iranian Space Agency, Engineering
Research Institute, Isfahan Engineering
Research Center, Isfahan, Iran , Lotfi Mohammad m.lotfi139@yahoo.com School of Mining, Petroleum Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran
كليدواژه :
Electrical conductivity , permeability , Gas Diffusion Layer , PEM fuel cell
عنوان كنفرانس :
هفدهمين كنفرانس ملي ديناميك شاره ها
چكيده فارسي :
Gas diffusion layer (GDL) is one of the essential component of Proton Exchangemembrane Fuel Cells (PEMFCs). In this research, two different methods including short fiber mixing and long fiber fabric of carbon fiber, used for production of Carbon papers (CPs) of GDL. At first method (mixing method), the short carbon fibers have a random distribution in the composite and in the second method (fabric method), the long carbon fibers are oriented in planar configuration. The fillers of these composites are expanded graphite and phenolic polymer as binder. The characterization is performed by maximum pore size, mean pore size, permeability, electrical conductivity, flexibility, and performance (I-V) curve. The results show that mixing method resulting in a higher electrical conductivity, pore size, and permeability, as well as I-V curve similar to Toray paper. In addition, the cost estimates and flexibility test show that both fabric and mixing methods results in a much lower cost, due to removing the graphitization and carbonization steps, and more flexible samples in comparison to Toray paper.
