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http://dx.doi.org/10.12656/jksht.2012.25.2.065

Fabrication of Gas Diffusion Layer for Fuel Cells Using Heat treatment Slurry Coating Method  

Kim, Sungjin (School of Advanced Materials & Systems Engineering, Kumoh National Institute Technology)
Park, Sung Bum (School of Advanced Materials & Systems Engineering, Kumoh National Institute Technology)
Park, Yong-Il (School of Advanced Materials & Systems Engineering, Kumoh National Institute Technology)
Publication Information
Journal of the Korean Society for Heat Treatment / v.25, no.2, 2012 , pp. 65-73 More about this Journal
Abstract
The Gas Diffusion Layer (GDL) of fuel cell, are required to provide both delivery of reactant gases to the catalyst layer and removal of water in either vapor or liquid form in typical PEMFCs. In this study, the fabrication of GDL containing Micro Porous Layer (MPL) made of the slurry of PVDF mixed with carbon black is investigated in detail. Physical properties of GDL containing MPL, such as electrical resistance, gas permeability and microstructure were examined, and the performance of the cell using developed GDL with MPL was evaluated. The results show that MPL with PVDF binder demonstrated uniformly distributed microstructure without large cracks and pores, which resulted in better electrical conductivity. The fuel cell performance test demonstrates that the developed GDL with MPL has a great potential due to enhanced mass transport property due to its porous structure and small pore size.
Keywords
Polymer electrolyte methanol fuel cell; Gas diffusion layer; Microporous layer; PTFE (Polytetra fluoroethylene); PVDF (Polyvinylidene Fluoride);
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