Development of a porosity-graded micro porous layer using thermal expandable graphite for proton exchange membrane fuel cells

In this study, a porosity-graded micro porous layer (MPL) was prepared using the double coating method to enhance the water removal ability of the gas diffusion layer (GDL). In the double MPL, the porosity of each layer was controlled using thermal expandable graphite (TEG), which could produce pore...

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