| Electrochemical Impedance Spectroscopy Modeling Cathode Layer of Polymer Fuel Cells |
| کد مقاله : 1051-CNF (R4) |
| نویسندگان |
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زهرا قالب چیان *1، مهدی خیرمند2، امراله وکیلی راد1 1دانشگاه یاسوج 2انجمن |
| چکیده مقاله |
| Abstract Polymer fuel cells are one of the best methods for various applications as a clean and efficient source. The most basic requirements in polymer fuel cells field are predicting the behavior and performance of these cells. Numerical modeling is an efficient way to understand the phenomena of transmission along with details and also as a useful tool for designing fuel cells. Therefore, in order to provide different models for cathodic reaction layer for studying and interpreting cathodic layer behavior, these models are simulated using MATLAB software. Also, for the polymer fuel cell, electrochemical equivalent circuit is proposed and their electrochemical impedance spectra were drawn using MATLAB software. Modeling the active catalytic layers is an appropriate method for predicting electrode behavior in polymer fuel cells. Nernst and Butler-Walmer equations are used. In the model used, the catalyst phase is considered as a network of nanoparticles which catalyst and activated carbon particles are evenly distributed on its surface. A comparison between these models using MATLAB software with direct numerical solution of the equations showed a good match. Therefore, it can be concluded that modeling the cathodic layer reaction and investigating the effect of parameters such as the effective penetration of hydrogen gases and Oxygen, as well as the molecular reduction of these species on the flow density and voltage, can lead to more optimum and efficient use in different industrial and experimental situations. Also, based on the results of performance modeling in polymer fuel cells, ohmic resistance and cathode activation of cathodes have the greatest effect on reducing the potential of fuel cells. However, at high current densities, the concentration potential drop decreases significantly and the active potential loss decreases with increasing temperature while it has the highest value for all current densities. |
| کلیدواژه ها |
| Impedance, Cathode Layer, Polymer Membrane, Modeling, Catalyst |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |