Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Methanol Electro-Oxidation of Electro-Spun RuO2 Nanowire Supported Pt Catalysts

Electro-Spun RuO2 나노선 지지체에 담지된 Pt촉매의 메탄올 Electro-Oxidation 특성

  • Yeom, Yong-Sik (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Ahn, Hyo-Jin (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
  • 염용식 (서울과학기술대학교 신소재공학과) ;
  • 안효진 (서울과학기술대학교 신소재공학과)
  • Received : 2011.06.14
  • Accepted : 2011.07.22
  • Published : 2011.08.27
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Abstract

Pt nanoparticle catalysts incorporated on $RuO_2$ nanowire support were successfully synthesized and their electrochemical properties, such as methanol electro-oxidation and electrochemically active surface (EAS) area, were demonstrated for direct methanol fuel cells (DMFCs). After fabricating $RuO_2$ nanowire support via an electrospinning method, two different types of incorporated Pt nanoparticle electrocatalysts were prepared using a precipitation method via the reaction with $NaBH_4$ as a reducing agent. One electrocatalyst was 20 wt% Pt/$RuO_2$, and the other was 40 wt% Pt/$RuO_2$. The structural and electrochemical properties of the Pt nanoparticle electrocatalysts incorporated on electrospun $RuO_2$ nanowire support were investigated using a bright field transmission electron microscopy (bright field TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry. The bright field TEM, XRD, and XPS results indicate that Pt nanoparticle electrocatalysts with sizes of approximately 2-4 nm were well incorporated on the electrospun $RuO_2$ nanowire support with a diameter of approximately 50 nm. The cyclic voltammetry results showed that the Pt nanoparticle catalysts incorporated on the electrospun $RuO_2$ nanowire support give superior catalytic activity in the methanol electro-oxidation and a higher electrochemically active surface (EAS) area when compared with the electrospun Pt nanowire electrocatalysts without the $RuO_2$ nanowire support. Therefore, the Pt nanoparticle catalysts incorporated on the electrospun $RuO_2$ nanowire support could be a promising electrode for direct methanol fuel cells (DMFCs).

Keywords

References

  1. A. S. Arico, S. Srinivasan and V. Antonucci, Fuel Cells, 1,133 (2001). https://doi.org/10.1002/1615-6854(200107)1:2<133::AID-FUCE133>3.0.CO;2-5
  2. S. Yoo, S. M. Kang, J. Lee, C. K. Rhee and H. Ryu, Kor.J. Mater. Res. 21(3). 180 (2011) (in Korean). https://doi.org/10.3740/MRSK.2011.21.3.180
  3. M. Winter and R. J. Brodd, Chem. Rev., 104, 4245 (2004). https://doi.org/10.1021/cr020730k
  4. H. -J. Ahn, W. J. Moon, T. -Y. Seong and D. Wang, Electrochem. Comm., 11, 635 (2009). https://doi.org/10.1016/j.elecom.2008.12.056
  5. K. -W. Park and Y. -E. Sung, J. Ind. Eng. Chem., 12, 165 (2006).
  6. H. -J. Ahn, H. -S. Shim, W. B. Kim, Y. E. Sung and T. -Y. Seong, J. Alloy. Comp., 471, L39 (2009). https://doi.org/10.1016/j.jallcom.2008.04.003
  7. H. -J. Ahn, J. -S. Jang, Y. E. Sung and T. -Y. Seong, J. Alloy. Comp., 473, L28 (2009). https://doi.org/10.1016/j.jallcom.2008.06.037
  8. S. Barth, F. Hernandez-Ramirez, J. D. Holmes and A. Romano-Rodriguez, Progr. Mater. Sci., 55, 563 (2010). https://doi.org/10.1016/j.pmatsci.2010.02.001
  9. H. -J. Ahn, H. -C. Choi, K. -W. Park, S. -B. Kim and Y. -E. Sung, J. Phys. Chem. B, 108, 9815 (2004). https://doi.org/10.1021/jp035769n
  10. X. Ye, J. Sha, Z. Jiao and L. Zhang, Nanostruct. Mater., 8, 919 (1997). https://doi.org/10.1016/S0965-9773(98)00013-0
  11. J. F. Moulder, W. F. Stickle, P. E. Sobol and K. D. Bomben, Handbook of X-ray Photoelectron Spectroscopy, p.114-115, p.180-181, Physical Electronics, Eden Pairie, MN,U.S.A (1995).
  12. Z. Liu, L. Hong and S. W. Tay, Mater. Chem. Phys., 105, 222, (2007). https://doi.org/10.1016/j.matchemphys.2007.04.045
  13. B. R. Rauhe, F. R. Mclarnon and E. J. Cairns, J.Electrochem. Soc., 142, 1073 (1995). https://doi.org/10.1149/1.2044547
  14. A. Pozio, M. De Francesco, A. Cemmi, F. Cardellini and L. Giorgi, J. Power Sourc., 105,13 (2002). https://doi.org/10.1016/S0378-7753(01)00921-1

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