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Development of the overpotential simulator for polymer electrolyte fuel cells and application for optimization of cathode structure |
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| Authors: | Tatsuya Hattori Riadh Sahnoun Hideyuki Tsuboi Akira Endou Momoji Kubo Akira Miyamoto |
| Affiliation: | a Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-11-1302 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan b New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan |
| Abstract: | We developed a novel computational method to investigate the influences of the microstructure of the polymer electrolyte fuel cell cathode catalyst layer on the overpotential characteristic toward its optimization. Three-dimensional cathode catalyst layer models were constructed by applying three-dimensional porous structure simulator and developed simulator was used to study the overpotential characteristics. Our results showed that the overpotential decreased as decrease of the standard deviation of the ionomer thickness distribution due to the increase of number of active sites. |
| Keywords: | 82.45.Fk 82.47.Nj 78.55.Mb 82.20.Wt |
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