Characterization of Pt-based transition metal alloy electrodes for PEFC

M. Uebayashi, Y. Sawada, Y. Sato, T. Itoh, B. Jeyadevan, K. Tohji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Pt metal is generally used as electrocatalyst in polymer electrolyte fuel cells (PEFC). However, the catalytic action of Pt anode is obstructed by the adsorption of CO gas molecules on to their surface and consequently the efficiency of the fuel cell decreases. Moreover, the activity of PEFC deteriorates even if the presence of CO is as low as 100 ppm. In this paper, attempts are being made to replace the Pt with Pt-based transition metal alloys such as PtFe and PtCo to overcome the above problem and also to improve the activity of fuel cells. The PtFe/C and PtCo/C necessary for the preparation of the electrodes were synthesized by depositing PtFe and PtCo particles synthesized using the polyol process on to the surface ketjenblack. From the results of cyclic voltammetry, we could confirm that PtFe/C could be used as an alternate material of Pt/C. However, Fe ions get eluted in the electrolyte. Thus, the study that can control the elution of Fe ion is necessary. Also in case of PtCo/C, we could confirm that Co ion doesn't get to elute, however the hydrogen oxidation reaction current is quite low.

Original languageEnglish
Title of host publicationWATER DYANMICS
Subtitle of host publication4th International Workshop on Water Dynamics
Pages162-165
Number of pages4
DOIs
Publication statusPublished - 2007 May 11
Event4th International Workshop on Water Dynamics - Sendai, Japan
Duration: 2006 Nov 72006 Nov 8

Publication series

NameAIP Conference Proceedings
Volume898
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Workshop on Water Dynamics
CountryJapan
CitySendai
Period06/11/706/11/8

Keywords

  • CO gas
  • Electrocatalyst
  • PEFC
  • PtCo/C
  • PtFe/C

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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