Preparation of CO-tolerant anode electrocatalysts for polymer electrolyte membrane fuel cells

D. Gub�n, A. Tompos, I. Bakos, Vass, Z. Pászti, E. Gy Szab�, I. Sajó, I. Borbáth

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The preparation and the thorough characterization of 40�wt% Pt electrocatalysts supported on Ti(1−x)MxO2-C (M�=�W, Mo; x�=�0.3–0.4) composite materials with enhanced stability and efficiency is presented. W-containing composite supported catalyst with different structural characteristics were compared in order to explore the influence of the nature of the W species on the electrocatalytic performance. The assessment of the electrochemical properties of the novel catalysts revealed a correlation between the degree of W incorporation, the hydrogen spillover effect and the stability against initial leaching which influences the activity and CO tolerance of the catalysts. A preparation route for Ti0.7Mo0.3O2-C composite with high extent of Mo incorporation was developed. No significant difference was observed in the activity, stability and CO tolerance of the W- or Mo-containing composite supported Pt catalysts with almost complete incorporation of the oxophilic dopant. Better performance of the Pt/Ti0.7M0.3O2-C (M�=�W, Mo) electrocatalysts in a single cell test device using hydrogen containing 100�ppm CO compared to the reference Pt/C and PtRu/C (Quintech) catalysts was also demonstrated.

Original languageEnglish
Pages (from-to)13741-13753
Number of pages13
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number19
DOIs
Publication statusPublished - May 11 2017

Fingerprint

electrocatalysts
Electrocatalysts
Proton exchange membrane fuel cells (PEMFC)
fuel cells
Anodes
anodes
electrolytes
membranes
catalysts
preparation
Composite materials
polymers
Catalyst supports
composite materials
Catalysts
Hydrogen
Electrochemical properties
Leaching
hydrogen
leaching

Keywords

  • Anode electrocatalysts
  • CO-tolerance
  • Composite materials
  • Conducting Ti-based mixed oxides
  • TiMoO
  • TiWO

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Preparation of CO-tolerant anode electrocatalysts for polymer electrolyte membrane fuel cells. / Gub�n, D.; Tompos, A.; Bakos, I.; Vass, ; Pászti, Z.; Szab�, E. Gy; Sajó, I.; Borbáth, I.

In: International Journal of Hydrogen Energy, Vol. 42, No. 19, 11.05.2017, p. 13741-13753.

Research output: Contribution to journalArticle

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