Physical and morphological characteristics and electrochemical behaviour in PEM fuel cells of PtRu/C catalysts

Ermete Antolini, Leonardo Giorgi, Francesco Cardellini, Enza Passalacqua

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Platinum-ruthenium catalysts supported on carbon (PtRu/C) have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), specific surface area analysis (BET), X-ray photoelectron spectroscopy (XPS) and in proton exchange membrane (PEM) fuel cell tests. The results indicate the presence of strong metal-carbon interactions, which hinder the formation of a single-phase face-centered cubic (fee) PtRu alloy. The particle size of the PtRu/C catalysts was smaller than both carbon-supported platinum (Pt/C) and ruthenium (Ru/C) catalysts. In the bimetallic electrocatalysts the intercrystallite distance decreased with respect to pure Pt and Ru metals. PEM fuel cell tests in H2/air operation mode revealed a decrease of performance with increasing carbon content of the catalyst, at a fixed Pt loading. In H2+ 100 ppm CO/air operation mode the maximum performance of the PEM fuel cell was attained at 0.63 atomic fraction Ru. © Springer-Verlag 2001.
Original languageEnglish
Pages (from-to)131 - 140
Number of pages10
JournalJournal of Solid State Electrochemistry
Volume5
Issue number2
DOIs
Publication statusPublished - 2001
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

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