Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell

Hwan Bae Yu, Joon Hee Kim, Ho In Lee, M. Aulice Scibioh, Jaeyoung Lee, Jonghee Han, Sung Pil Yoon, Heung Yong Ha

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (≤0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO2 around platinum sites.

Original languageEnglish
Pages (from-to)59-65
Number of pages7
JournalJournal of Power Sources
Volume140
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

Keywords

  • Air utilization
  • Cathode catalyst
  • Ceo
  • Direct methanol fuel cell
  • MEA
  • Oxygen storage material

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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    Yu, H. B., Kim, J. H., Lee, H. I., Scibioh, M. A., Lee, J., Han, J., Yoon, S. P., & Ha, H. Y. (2005). Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell. Journal of Power Sources, 140(1), 59-65. https://doi.org/10.1016/j.jpowsour.2004.08.015