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

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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 (fcc) 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.

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Authors and Affiliations

  1. ENEA C.R. Casaccia, Erg Tea Echi, Via Anguillarese 301, 00060 Santa Maria di Galeria (Rome), Italy e-mail: antolinie@casaccia.enea.it Tel.: +39-6-30486552; Fax: +39-6-30486357, , , , , , IT

    Ermete Antolini & Leonardo Giorgi

  2. ENEA C.R. Casaccia, Inn Numa Matav, Via Anguillarese 301, 00060 Santa Maria di Galeria (Rome), Italy, , , , , , IT

    Francesco Cardellini

  3. CNR, Institute for Transformation and Storage of Energy, Via Salita S. Lucia sopra Contesse 39, 98126 S. Lucia, Messina, Italy, , , , , , IT

    Enza Passalacqua

Authors
  1. Ermete Antolini
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  2. Leonardo Giorgi
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  3. Francesco Cardellini
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  4. Enza Passalacqua
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Additional information

Received: 2 December 1999 / Accepted: 27 January 2000

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Antolini, E., Giorgi, L., Cardellini, F. et al. Physical and morphological characteristics and electrochemical behaviour in PEM fuel cells of PtRu /C catalysts. J Solid State Electrochem 5, 131–140 (2001). https://doi.org/10.1007/s100080000116

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  • DOI: https://doi.org/10.1007/s100080000116

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