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- W2000617105 abstract "PtPb/C and PtSb/C bi-metallic catalysts were synthesized by chemical deposition of Pb or Sb on a commercial 40% Pt/C catalyst. The performances of catalysts with a range of compositions were compared in a multi-anode direct formic acid fuel cell in order to optimize compositions and evaluate the statistical significance of differences between catalysts. The catalytic activity for formic acid oxidation increased approximately linearly with adatom coverage for both PtPb/C and PtSb/C, to maxima at fractional coverages of ca. 0.7. At a cell voltage of 0.5 V, the currents at the optimum Pb or Sb coverages were ca. 8 times higher than at unmodified Pt/C. CO-stripping results indicate that the presence of Pb or Sb facilitates the oxidation of adsorbed CO. In addition, both metals appear to produce electronic effects that inhibit poison formation on the modified Pt surface." @default.
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- W2000617105 date "2010-10-01" @default.
- W2000617105 modified "2023-10-12" @default.
- W2000617105 title "Pb and Sb modified Pt/C catalysts for direct formic acid fuel cells" @default.
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- W2000617105 doi "https://doi.org/10.1016/j.electacta.2010.07.019" @default.
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