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Preparation and Electroactivities of Carbon Nanotubes-supported Metal Catalyst Electrodes Prepared by a Potential Cycling
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  • Journal title : Carbon letters
  • Volume 10, Issue 3,  2009, pp.213-216
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2009.10.3.213
 Title & Authors
Preparation and Electroactivities of Carbon Nanotubes-supported Metal Catalyst Electrodes Prepared by a Potential Cycling
Kim, Seok; Jung, Yong-Ju; Park, Soo-Jin;
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The electrochemical deposition of Pt nanoparticles on carbon nanotubes (CNTs) supports and their catalytic activities for methanol electro-oxidation were investigated. Pt catalysts of 4~12 nm average crystalline size were grown on supports by potential cycling methods. Electro-plating of 12 min time by potential cycling method was sufficient to obtain small crystalline size 4.5 nm particles, showing a good electrochemical activity. The catalysts` loading contents were enhanced by increasing the deposition time. The crystalline sizes and morphology of the Pt/support catalysts were evaluated using X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The electrochemical behaviors of the Pt/support catalysts were investigated according to their characteristic current-potential curves in a methanol solution. In the result, the electrochemical activity increased with increased plating time, reaching the maximum at 12 min, and then decreased. The enhanced electroactivity for catalysts was correlated to the crystalline size and dispersion state of the catalysts.
Metal catalysts;Carbon nanotubes;Electroactivity;Potential cycling;Fuel cells;
 Cited by
활성탄소에 담지된 백금나노입자의 전기화학적 거동에 대한 그라파이트 나노섬유 첨가효과,조원빈;오미순;김주현;김석;

Korean Chemical Engineering Research, 2010. vol.48. 6, pp.673-678
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