Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation

Kazunari Sasaki, Kenji Shinya, Shuhei Tanaka, Yuudai Kawazoe, Takashi Kuroki, Kouhei Takata, Hajime Kusaba, Yasutake Teraoka

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Article numberK7.4
Pages (from-to)241-246
Number of pages6
JournalUnknown Journal
Volume835
Publication statusPublished - 2005

Fingerprint

Impregnation
electrode
catalyst
Electrodes
Catalysts
Carbon nanofibers
carbon
Catalyst supports
Fibers
Carbon
Soot
Carbon Nanotubes
in situ
Rotating disks
Voltammetry
fuel cell
Crystallite size
black carbon
Platelets
Carbon black

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Sasaki, K., Shinya, K., Tanaka, S., Kawazoe, Y., Kuroki, T., Takata, K., ... Teraoka, Y. (2005). Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation. Unknown Journal, 835, 241-246. [K7.4].

Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation. / Sasaki, Kazunari; Shinya, Kenji; Tanaka, Shuhei; Kawazoe, Yuudai; Kuroki, Takashi; Takata, Kouhei; Kusaba, Hajime; Teraoka, Yasutake.

In: Unknown Journal, Vol. 835, K7.4, 2005, p. 241-246.

Research output: Contribution to journalArticle

Sasaki, K, Shinya, K, Tanaka, S, Kawazoe, Y, Kuroki, T, Takata, K, Kusaba, H & Teraoka, Y 2005, 'Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation', Unknown Journal, vol. 835, K7.4, pp. 241-246.
Sasaki K, Shinya K, Tanaka S, Kawazoe Y, Kuroki T, Takata K et al. Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation. Unknown Journal. 2005;835:241-246. K7.4.
Sasaki, Kazunari ; Shinya, Kenji ; Tanaka, Shuhei ; Kawazoe, Yuudai ; Kuroki, Takashi ; Takata, Kouhei ; Kusaba, Hajime ; Teraoka, Yasutake. / Nanostructured PEFC electrode catalysts prepared via in-situ colloidal impregnation. In: Unknown Journal. 2005 ; Vol. 835. pp. 241-246.
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