Microstructural analysis of catalyst/catalyst support interfaces of PEFC electrocatalysts

J. T. Chou, Kazunari Sasaki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this study, we observed the catalyst/catalyst support interfaces of Polymer Electrolyte Fuel Cell (PEFC) electrocatalysts by High-Resolution TEM. As the catalyst supports, various carbon nanofibers, including VGCF (Vapor-grown carbon fibers), Platelet type carbon nanofibers and Herringbone-type carbon nanofibers, were applied. We found larger Platinum particles in the Pt/VGCF. The interfacial structure was identified to be the (111)Pt//(0001)Graphite, so that its boundary is relatively stable, whereas particle growth could easily occur. On the contrary, in the Pt/Platelet and in the Pt/Herringbone, well-dispersed Platinum particles were observed, as the catalyst/catalyst support interface is rather unstable. Moreover, twin was observed in the Platinum particles supported on the Herringbone-type nanofibers.

Original languageEnglish
Pages (from-to)1405-1408
Number of pages4
JournalSolid State Ionics
Volume179
Issue number27-32
DOIs
Publication statusPublished - Sep 30 2008

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Carbon nanofibers
electrocatalysts
Electrocatalysts
Platinum
Catalyst supports
Electrolytes
fuel cells
Fuel cells
Polymers
electrolytes
Platelets
catalysts
Catalysts
Carbon fibers
polymers
Vapors
platinum
carbon fibers
platelets
Graphite

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Microstructural analysis of catalyst/catalyst support interfaces of PEFC electrocatalysts. / Chou, J. T.; Sasaki, Kazunari.

In: Solid State Ionics, Vol. 179, No. 27-32, 30.09.2008, p. 1405-1408.

Research output: Contribution to journalArticle

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