Fast preparation of PtRu catalysts supported on carbon nanofibers by the microwave-polyol method and their application to fuel cells

Masaharu Tsuji, Masatoshi Kubokawa, Ryuto Yano, Nobuhiro Miyamae, Takeshi Tsuji, Mun Suk Jun, Seonghwa Hong, Seongyop Lim, Seong Ho Yoon, Isao Mochida

Research output: Contribution to journalArticlepeer-review

128 Citations (Scopus)

Abstract

PtRu alloy nanoparticles (24 ± 1 wt%, Ru/Pt atomic ratios = 0.91-0.97) supported on carbon nanofibers (CNFs) were prepared within a few minutes by using a microwave-polyol method. Three types of CNFs with very different surface structures, such as platelet, herringbone, and tubular ones, were used as new carbon supports. The dependence of particles sizes and electrochemical properties on the structures of CNFs was examined. It was found that the methanol fuel cell activities of PtRu/CNF catalysts were in the order of platelet > tubular > herringbone. The methanol fuel cell activities of PtRu/CNFs measured at 60°C were 1.7-3.0 times higher than that of a standard PtRu (29 wt%, Ru/Pt atomic ratio = 0.92) catalyst loaded on carbon black (Vulcan XC72R) support. The best electrocatalytic activity was obtained for the platelet CNF, which is characterized by its edge surface and high graphitization degree.

Original languageEnglish
Pages (from-to)387-390
Number of pages4
JournalLangmuir
Volume23
Issue number2
DOIs
Publication statusPublished - Jan 16 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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