Development of high quality Pt-CeO2 electrodes supported on carbon black for direct methanol fuel cell applications
Date
2008
Authors
Takahashi, M.
Mori, T.
Vinu, A.
OA, D.R.
Kobayashi, H.
Drennan, J.
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Journal article
Citation
Advances in Applied Ceramics, 2008; 107(2):57-63
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Abstract
A Platinum (Pt) on pure ceria (CeO2) particles supported by carbon black (CB) was synthesised. The electrochemical activity of methanol oxidation reaction on synthesised Pt-CeO2/CB anodes was investigated. To develop this anode, the influence of surface area of CeO2 particles in Pt-CeO2/CB on anode properties was examined. The anode properties (i.e. onset potential and peak current density) were improved using fine CeO2 particles with high surface area. This indicates that higher activity on surface of CeO2 improves the anode properties. The anode properties on Pt high surface area CeO2/CB was better than that on Pt-Tin oxide(SnO2)/CB or Pt-Ru/carbon. The authors suggest that the rate determining steps of methanol oxidation reaction on Pt-CeO2/CB and other anodes such as Pt-SnO2/CB and Pt-Ru/carbon are different which accounts for the difference in performance. Therefore, it is concluded that a design of active surface of Ceo2 is a key for development of Pt-CeO2/CB anode in polymer membrane fuel cells.
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Copyright 2008 Institute of Materials, Minerals and Mining.