한국전기화학회:학술대회논문집

The Korean Electrochemical Society (한국전기화학회)
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The Effects of 2nd Metals in Pt-based Electrocatalysts on Methanol Oxidation

Pt합금 촉매에서 메탄을 산화 반응에 미치는 제2금속의 영향

  • 김영민 (광주과학기술원 신소재공학과) ;
  • 박경원 (광주과학기술원 신소재공학과) ;
  • 최종호 (광주과학기술원 신소재공학과) ;
  • 박인수 (광주과학기술원 신소재공학과) ;
  • 성영은 (광주과학기술원 신소재공학과)
  • Published : 2002.07.01
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Abstract

The electrooxidation of methanol was studied using Pt, PtRu(1:1), PtNi(1:1), PtRh(1:1) and PtOs(1:1) alloy nanoparticles for application as electrocatalysts. The effects of the second metals in the electrocatalytic activity was investigated using cyclic voltammetry (CV), chronoamperometry (CA), X-ray photoelectron spectroscopy (XPS). There are the metallic and oxygen states in the PtRu and PtOs electrocatalysts . In the XPS of PtRu and PtOs alloy nanoparticles, the oxygen sources were dominant as the second metal's effects. Negative shifts of the binding energies of Pt for the PtNi, PtRh alloy nanoparticles were determined by XPS measurements, which can be explained by electronic effects.

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