Electrocatalytic Activity of Platinum-palladium Catalysts Prepared by Sequential Reduction Methods

순차적 환원 방법으로 제조된 백금-팔라듐 촉매의 전기 활성

  • Park, Jae Young (Department of Chemical and Biochemical Engineering, Pusan National University) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University) ;
  • Jung, Yongju (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Kim, Seok (Department of Chemical and Biochemical Engineering, Pusan National University)
  • 박재영 (부산대학교 화학생명공학부) ;
  • 박수진 (인하대학교 화학과) ;
  • 정용주 (한국기술교육대학교 응용화학공학과) ;
  • 김석 (부산대학교 화학생명공학부)
  • Published : 2012.04.10

Abstract

In this study, two different methods were studied to prepare Pt-Pd catalysts for direct methanol fuel cells in order to enhance the electrochemical efficiency. The catalysts were compared with simultaneously deposited Pt-Pd and sequentially deposited Pt-Pd. The electrocatalysts contained 20 wt% of metal loading on carbon black and 1 : 2 of Pt : Pd atomic ratio. Electrochemical properties of the catalysts were compared by measuring cyclic voltammetries and average sizes and lattice parameters were measured by transmission electron microscopy images and x-ray diffraction. As a result, sequentially deposited Pt-Pd/C catalysts showed better electrochemical properties than those of simultaneously deposited Pt-Pd/C catalysts.

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