Efficient usage of highly dispersed Pt on carbon nanotubes for electrode catalysts of polymer electrolyte fuel cells

T. Matsumoto, T. Komatsu, H. Nakano, K. Arai, Y. Nagashima, E. Yoo, T. Yamazaki, M. Kijima, H. Shimizu, Y. Takasawa, J. Nakamura

Research output: Contribution to journalConference articlepeer-review

202 Citations (Scopus)

Abstract

A Pt-deposited carbon nanotube (CNT) shows higher performance than a commercial Pt-deposited carbon black (CB) with reducing 60% Pt load per electrode area in polymer electrolyte fuel cells (PEFCs) below 500mA/cm 2. K2PtCl4 and H2PtCl 6·6(H2O) are used for the Pt deposition onto multi-walled CNTs (MWCNTs), which are produced by the catalytic decomposition of hydrocarbons. The electric power densities produced using the Pt/CNT electrodes are greater than that of the Pt/CB by a factor of two to four on the basis of the Pt load per power. CNTs are thus found to be a good support of Pt particles for PEFC electrodes. TEM images show 2-4-nm Pt nanoparticles dispersed on the CNT surfaces. These high performances are considered to be due to the efficient formation of the triple-phase boundaries of gas-electrode-electrolyte. The mechanisms of Pt deposition are discussed for these Pt-deposited CNTs.

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalCatalysis Today
Volume90
Issue number3-4
DOIs
Publication statusPublished - Jul 1 2004
Externally publishedYes
EventEnvironmental Catalysis and Eco-Materials - Beijing, China
Duration: Oct 7 2003Oct 7 2003

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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