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Journal of Applied Electrochemistry

, Volume 39, Issue 1, pp 135–140 | Cite as

Effect of the preparation conditions of carbon-supported Pt catalyst on PEMFC performance

  • Ji Bong Joo
  • Pil Kim
  • Wooyoung Kim
  • Younghun Kim
  • Jongheop YiEmail author
Original Paper

Abstract

Carbon-supported Pt catalysts were prepared using NaBH4 as a reducing agent in either ethylene glycol or water for use as a cathode catalyst in PEMFCs (polymer electrolyte membrane fuel cells). Aqueous NaBH4 solution was used to reduce Pt precursor and to produce the Pt-W catalyst, while Pt-E and Pt-E-base catalysts were synthesized using NaBH4 in ethylene glycol for the reduction of Pt. Compared to Pt-W catalyst, Pt-E and Pt-E-base catalysts have higher Pt dispersion and larger EAS (electrochemically active surface area) due to the stabilizing effect of ethylene glycolic NaBH4 solution on Pt particles. In addition, increasing pH of the preparation solution improved the Pt dispersion (Pt-E-base). In unit cell tests the performance of Pt catalysts decreased in the following order: Pt-E-base > Pt-E > Pt-commercial > Pt-W. Higher metal dispersion and larger EAS are believed to be responsible for the superior performance of Pt-E catalysts, particularly Pt-E-base, compared to other catalysts.

Keywords

Supported Pt catalyst pH Dispersion Ethylene glycol PEMFC 

Notes

Acknowledgment

This work was supported by Grant No. R01-2006-000-10239-0 from the Basic Research Program of the Korea Science & Engineering Foundation.

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Ji Bong Joo
    • 1
  • Pil Kim
    • 2
  • Wooyoung Kim
    • 1
  • Younghun Kim
    • 3
  • Jongheop Yi
    • 1
    Email author
  1. 1.School of Chemical and Biological Engineering, Institute of Chemical ProcessesSeoul National UniversitySeoulSouth Korea
  2. 2.School of Chemical Engineering & Specialized Graduate School of Hydrogen and Fuel Cell EngineeringChonbuk National UniversityJeonjuSouth Korea
  3. 3.Department of Chemical EngineeringKwangwoon UniversitySeoulSouth Korea

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