Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지
DOI QR코드

DOI QR Code

Nano-structured Carbon Support for Pt/C Anode Catalyst in Direct Methanol Fuel Cell

  • Choi Jae-Sik (School of Chemical & Biological Engineering and Research Center for Energy Conversion & Storage, Seoul National University) ;
  • Kwon Heock-Hoi (Department of Chemical and Environmental Engineering, Soongsil University) ;
  • Chung Won Seob (School of Materials Science & Engineering, Pusan National University) ;
  • Lee Ho-In (School of Chemical & Biological Engineering and Research Center for Energy Conversion & Storage, Seoul National University)
  • Published : 2005.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

Platinum catalysts for the DMFC (Direct Methanol Fuel Cell) were impregnated on several carbon supports and their catalytic activities were evaluated with cyclic voltammograms of methanol electro-oxidation. To increase the activities of the Pt/C catalyst, carbon supports with high electric conductivity such as mesoporous carbon, carbon nanofiber, and carbon nanotube were employed. The Pt/e-CNF (etched carbon nanofiber) catalyst showed higher maximum current density of $70 mA cm^{-2}$ and lower on-set voltage of 0.54 V vs. NHE than the Pt/Vulcan XC-72 in methanol oxidation. Although the carbon named by CNT (carbon nanotube) series turned out to have larger BET surface area than the carbon named by CNF (carbon nanofiber) series, the Pt catalysts supported on the CNT series were less active than those on the CNF series due to their lower electric conductivity and lower availability of pores for Pt loading. Considering that the BET surface area and electric conductivity of the e-CNF were similar to those of the Vulcan XC-72, smaller Pt particle size of the Pt/e-CNF catalyst and stronger metal-support interaction were believed to be the main reason for its higher catalytic activity.

Keywords

References

  1. L. Carrette, K. A. Friedrich and U. Stimming : Fuel Cells, 1 (2001) 5 https://doi.org/10.1002/1615-6854(200105)1:1<5::AID-FUCE5>3.0.CO;2-G
  2. P. K. Shen, K. Y. Chen and A. C. C. Tseung : J. Chem. Soc. Faraday T., Vol. 90 (1994) 3089 https://doi.org/10.1039/ft9949003089
  3. S. Wasmus and A. Kuver : J. Electroanal. Chem., 461 (1999) 14 https://doi.org/10.1016/S0022-0728(98)00197-1
  4. W. H. Lizcano-Valbuena, V. A. Paganin, C. A. P. Leite, F. Galembeck and E. R. Gonzalez : Electrochim. Acta, 48 (2003) 3869 https://doi.org/10.1016/S0013-4686(03)00523-1
  5. S. Han, Y. K. Yun, K. W. Park, Y. E. Sung, T. Hyeon, Adv. Mater., Vol. 15 (2003) 1922 https://doi.org/10.1002/adma.200305697
  6. F. J. Maldonado-Hodar, C. Moreno-Castilla, J. Rivera- Utrilla, Y. Hanzawa and Y. Yamada : Langmuir, 16 (2000) 4367 https://doi.org/10.1021/la991080r
  7. W. S. Chung, Abstract Presented at the 27th KSIEC Meeting, (2003) 186
  8. S. Han, K. Sohn and T. Hyeon : Chem. Mater., 12 (2000) 3337 https://doi.org/10.1021/cm000106t
  9. P. L. Walker, : W. Kuhn (Ed), Ultrafine Particles, Wiley New York, 1963, pp.297-299
  10. C. Park and R. T. K. Baker : J. Phys. Chem. B, 102 (1998) 5168 https://doi.org/10.1021/jp981210p

Cited by

  1. Excellent Durability of Substoichiometric Titanium Oxide As a Catalyst Support for Pd in Alkaline Direct Ethanol Fuel Cells vol.51, pp.30, 2012, https://doi.org/10.1021/ie202696z