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Nanostructured PEFC Electrode Catalysts Prepared via In-situ Colloidal Impregnation

Published online by Cambridge University Press:  01 February 2011

Kazunari Sasaki ,
Kenji Shinya ,
Shuhei Tanaka ,
Yuudai Kawazoe ,
Takashi Kuroki ,
Kouhei Takata ,
Hajime Kusaba  and
Yasutake Teraoka
Kazunari Sasaki
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN Kyushu University, Hydrogen Technology Research Center, Fukuoka, JAPAN
Kenji Shinya
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Shuhei Tanaka
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Yuudai Kawazoe
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Takashi Kuroki
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Kouhei Takata
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Hajime Kusaba
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
Yasutake Teraoka
Affiliation:
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Kasuga-Koen 6–1, Kasuga-shi, Fukuoka 816–8580, JAPAN
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Abstract

Nanostructured Platinum-based electrode catalysts were prepared via in-situ colloidal impregnation for polymer electrolyte fuel cells. Crystallite size, grain size, and distribution of Pt nanoparticles on carbon support materials were characterized by XRD, TEM, high-resolution FESEM, and STEM. Effective surface area and kinetically-controlled current density of Pt electrode catalysts were analyzed by cyclic and hydrodynamic voltammetry using rotating disk electrodes. PEFCs with these electrode catalysts were also prepared and their I-V characteristics were examined at 80°C.

We have succeeded to develop Pt electrode catalysts with a diameter of a few nm, supported on carbon nanofibers with different structures (including herringbone-type fibers, platelet-type fibers, and highly-conductive vapor-grown fibers), carbon nanotubes, as well as carbon black. The dependencies of nanostructure and electrochemical properties on crystallographic structure of carbon support materials and preparation conditions of electrode catalysts are analyzed and discussed. Nanostructural design of PEFC electrode catalyst layers using carbon nanofibers as catalyst supports and electrode fillers is also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K7.4
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1. Sasaki, K., Shinya, K., Tanaka, S., Furukawa, A., Ando, K., Kuroki, T., Kusaba, H., Teraoka, Y., in Proc. 4th Intl. Symp. Proton Conducting Membrane Fuel Cells, (Electrochem. Soc., Pennington, NJ, 2004) (submitted).Google Scholar
2. Sasaki, K., Shinya, K., Tanaka, S., Furukawa, A., Ando, K., Kuroki, T., Kusaba, H., Teraoka, Y., in Proc. 11th FCDIC Fuel Cell Symposium, (FCDIC, Tokyo Japan, 2004) pp. 239–42.Google Scholar
3. Sasaki, K., Furukawa, A., Shinya, K., and Teraoka, Y., J. Power Sources (submitted).Google Scholar