We have investigated the effect of the recast temperature, i.e., heat treatment of a polymer electrolyte, on the diffusion coefficient and solubility of oxygen in the electrolyte and also on the morphological properties of recast ion-exchange membranes for improving the cathode activity in PEFCs. The recast membranes were prepared at different recast temperatures from Nafion® and Aciplex® solutions. Based on the chronoamperometric measurements, it was found that the diffusion coefficient and solubility of oxygen were deeply affected by the recast temperature. The diffusion coefficient increased with the decreasing recast temperature while the solubility had the opposite tendency. The water uptakes and ionic cluster size also varied with the recast temperature. Based on the X-ray measurements, it is considered that the differences in the mass transport parameters, the cluster sizes and water uptakes are due to the growth of clusters and crystallinity in the electrolyte.
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ASME 2003 1st International Conference on Fuel Cell Science, Engineering and Technology
April 21–23, 2003
Rochester, New York, USA
Conference Sponsors:
- Electronic and Photonic Packaging Division
ISBN:
0-7918-3668-1
PROCEEDINGS PAPER
Study on Morphological Properties and Mass Transport Parameters of ORR in Recast Ion-Exchange Polymer Electrolyte Membranes Available to Purchase
Kunchan Lee,
Kunchan Lee
Yokohama National University, Yokohama, Japan
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Shigenori Mitsushima,
Shigenori Mitsushima
Yokohama National University, Yokohama, Japan
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Nobuyuki Kamiya,
Nobuyuki Kamiya
Yokohama National University, Yokohama, Japan
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Ken-Ichiro Ota
Ken-Ichiro Ota
Yokohama National University, Yokohama, Japan
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Kunchan Lee
Yokohama National University, Yokohama, Japan
Akimitsu Ishihara
CREST·JST, Japan
Shigenori Mitsushima
Yokohama National University, Yokohama, Japan
Nobuyuki Kamiya
Yokohama National University, Yokohama, Japan
Ken-Ichiro Ota
Yokohama National University, Yokohama, Japan
Paper No:
FUELCELL2003-1725, pp. 241-243; 3 pages
Published Online:
January 5, 2009
Citation
Lee, K, Ishihara, A, Mitsushima, S, Kamiya, N, & Ota, K. "Study on Morphological Properties and Mass Transport Parameters of ORR in Recast Ion-Exchange Polymer Electrolyte Membranes." Proceedings of the ASME 2003 1st International Conference on Fuel Cell Science, Engineering and Technology. 1st International Fuel Cell Science, Engineering and Technology Conference. Rochester, New York, USA. April 21–23, 2003. pp. 241-243. ASME. https://doi.org/10.1115/FUELCELL2003-1725
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