Effect of tungs tenn PtRuW/C catalysts for promoting methanol electro-oxidation

Chang Soo Noh, Jung Min Sohn, Young Kwon Park

Research output: Contribution to journalArticlepeer-review


PtRuW/C catalysts were prepared with the different molar ratios of Pt: Ru: W and their compositions were analyzed by energy dispersive X-ray (EDX). The uniform distribution of particles was observed using transmission electron microscopy (TEM). An average crystalline size of 3.5~5.5 nm was calculated based on x-ray diffraction (XRD) data. The electrochemical properties such as electrochemically active surface areas, current densities, specific activities and poisoning rates, were analyzed via CO stripping, linear sweep voltammetry and chronoamperometry. From the analysis, we observed that ternary alloy catalysts, except PtRu2W2/C, have higher current densities, specific activities and stabilities than those of commercial binary catalysts. Among all in-house catalysts, Pt5Ru4W/C showed the highest specific activity of 121.05 mA{dot operator}m-2 and the lowest poisoning rate of 0.01%{dot operator}s-1.

Original languageEnglish
Pages (from-to)561-566
Number of pages6
JournalApplied Chemistry for Engineering
Issue number6
StatePublished - Dec 2012


  • Direct methanol fuel cell
  • Methanol electro-oxidation
  • Ptruw
  • Ternary catalyst
  • Tungsten effect


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