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논문 기본 정보

자료유형
동향자료
저자정보
Park, Soo-Jin (Korea CCS R&D Center, Korea Institute of Energy Research) Park, Jeong-Min (Korea CCS R&D Center, Korea Institute of Energy Research) Lee, Seul-Yi (Korea CCS R&D Center, Korea Institute of Energy Research)
저널정보
한국탄소학회 Carbon letters Carbon letters 제14권 제2호
발행연도
2013.1
수록면
121 - 125 (5page)

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In this study, PtRu nanoparticles deposited on binary carbon supports were developed for use in direct methanol fuel cells using carbon blacks (CBs) and multi-walled carbon nanotubes (MWCNTs). The particle sizes and morphological structures of the catalysts were analyzed using X-ray diffraction and transmission electron microscopy, and the PtRu loading content was determined using an inductively coupled plasma-mass spectrometer. The electrocatalytic characteristics for methanol oxidation were evaluated by means of cyclic voltammetry with 1 M $CH_3OH$ in a 0.5 M $H_2SO_4$ solution as the electrolyte. The PtRu particle sizes and the loading level were found to be dependent on the mixing ratio of the two carbon materials. The electroactivity of the catalysts increased with an increasing MWCNT content, reaching a maximum at 30% MWCNTs, and subsequently decreased. This was attributed to the introduction of MWCNTs as a secondary support, which provided a highly accessible surface area and caused morphological changes in the carbon supports. Consequently, the PtRu nanoparticles deposited on the binary support exhibited better performance than those deposited on the single support, and the best performance was obtained when the mass ratio of CBs to MWCNTs was 70:30.

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