سال انتشار: ۱۳۸۷

محل انتشار: دومین همایش پیل سوختی ایران

تعداد صفحات: ۳

نویسنده(ها):

M Javaheri – Department of Physical Chemistry, Faculty of Science, Tarbiat Modarres University, Tehran, Iran
H Gharibi – Department of Physical Chemistry, Faculty of Science, Tarbiat Modarres University, Tehran, Iran
R.A Mirzaei – Department of Chemistry, Faculty of Science, Shahid Rajaee University, Tehran, Iran
M Kheirmand – Department of Chemistry, Faculty of Science,yasouj University, yasouj, Iran

چکیده:

As a potential candidate for an environmentally benign and a highly efficient electric power generation technology, proton exchange membrane fuel cells (PEMFC) are now attracting enormous interest for various applications [1-4]. Gasdiffusion electrode (GDE) structures in polymer electrolyte fuel cell have evolved from two layers to three layer structure. Three layer electrodes are made by a porous support layer (carbon paper), a diffusion layer consisting of carbon particles and polytetrafluoroethylene (PTFE) and a catalyst layer formed by Pt/C and Nafion. The performances of the electrodes depend on many parameters one of them is related to the thickness and morphology of diffusion layer. Diffusion layer have the role of reactant permeation from flow fields to catalytic sites. Altering the composition of the diffusion layer can lead to substantial improvements in the
performance of the cell.