Development of carbon supports with increased corrosion resistance for Pt/C catalysts for oxygen electroreduction

V. A. Golovin, E. N. Gribov, P. A. Simonov, A. G. Okunev, I. N. Voropaev, A. N. Kuznetsov, A. V. Romanenko

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The influence of different surface modifications of carbon supports on the corrosion resistance of 50 wt % Pt/C catalysts on their basis was studied. The corrosion resistance was measured from changes in the electroactive surface area of platinum in the course of potential cycling from 1.0 to 1.5 V versus the reversible hydrogen electrode (potential sweep rate, 0.5 V/s) during 60000 cycles. A 40% Pt/Vulcan XC-72 commercial catalyst was used as the reference sample. The supports were modified by the carbonization of the high surface area carbon black Ketjenblack DJ-600 and by the additional activation of the carbon-carbon composite Sibunit-1562. It was found that the preliminary carbonization of the Ketjenblack DJ-600 support with a propane-butane mixture at 770°C and the activation of Sibunit-1562 with subsequent thermal treatment at 500°C increased and decreased, respectively, the corrosion resistance of the 50 wt % Pt/C catalysts on their basis.

Original languageEnglish
Pages (from-to)509-514
Number of pages6
JournalKinetics and Catalysis
Volume56
Issue number4
DOIs
Publication statusPublished - 28 Jul 2015

Keywords

  • carbon supports
  • corrosion resistance
  • electrocorrosion
  • platinum

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