Bulletin of the Korean Chemical Society

  • 제31권2호
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  • Pages.331-334
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  • 2010
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Effect of O2 Plasma Treatments of Carbon Supports on Pt-Ru Electrocatalysts

  • 발행 : 2010.02.20
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초록

In the present study, carbon supports mixed with purified multi-walled carbon nanotubes (MWNTs) and carbon blacks (CBs) were used to improve the cell performance of direct methanol fuel cells (DMFCs). Additionally, the effect of $O_2$ plasma treatment on CBs/MWNTs supports was investigated for different plasma RF powers of 100, 200, and 300 W. The surface and structural properties of the CBs/MWNTs supports were characterized by FT-IR, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and inductive coupled plasma-mass spectrometer (ICP-MS). The electrocatalytic activity of PtRu/CBs/MWNTs catalysts was investigated by cyclic voltammetry measurement. In the experimental results, the oxygen functional groups of the supports were increased with increasing plasma RF power, while the average Pt particle size was decreased owing to the improvement of dispersibility of the catalysts. The electrochemical activity of the catalysts for methanol oxidation was gradually improved by the larger available active surface area, itself due to the introduction of oxygen functional groups. Consequently, it was found that $O_2$ plasma treatments could influence the surface properties of the carbon supports, resulting in enhanced electrocatalytic activity of the catalysts for DMFCs.

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피인용 문헌

  1. Insights into the Effects of Functional Groups on Carbon Nanotubes for the Electrooxidation of Methanol vol.27, pp.15, 2011, https://doi.org/10.1021/la2011452
  2. Effect of activated graphite nanofibers on electrochemical activities of Pt–Ru nanoparticles for fuel cells vol.37, pp.9, 2011, https://doi.org/10.1007/s11164-011-0387-7
  3. Comparative study of plasma-treated non-precious catalysts for oxygen and hydrogen peroxide reduction reactions vol.4, pp.9, 2011, https://doi.org/10.1039/c1ee01163d
  4. Intensification of a hydrogenation catalyst activity by nanosecond pulsed discharge treatment vol.15, pp.8, 2018, https://doi.org/10.1002/ppap.201800065
  5. Decomposition of poly(amidoamine) (PAMAM) dendrimers under O2 plasma conditions vol.97, pp.3, 2010, https://doi.org/10.1016/j.polymdegradstab.2011.11.008