Composite Anode Catalysts Based on PtRu and Metal Oxide Nanoparticles for DMFCs

David Sebastián; Vincenzo Baglio; Claudia d'Urso; Alessandro Stassi; A.S. Aricò

doi:10.4028/www.scientific.net/AST.93.70

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 93Composite Anode Catalysts Based on PtRu and Metal...

Composite Anode Catalysts Based on PtRu and Metal Oxide Nanoparticles for DMFCs

Abstract:

A composite anode was investigated with the aim of enhancing the performance of direct methanol fuel cells (DMFCs). Fine iridium oxide nanoparticles were synthesized by a sulfite complex method. These IrO₂ nanoparticles were mixed by sonication with a 50% PtRu/C catalyst prepared by the same procedure, considered as benchmark anode catalyst. A significantly higher performance was recorded for the composite electrode compared to the bare one based only on PtRu/C. The results confirm that the electrocatalytic activity is related to the characteristics of water displacement of the additive, evidencing that a multifunctional catalyst can operate better than PtRu for methanol oxidation since this multi-step process requires different functionalities to speed up the reaction rate.

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Periodical:

Advances in Science and Technology (Volume 93)

Pages:

70-75

DOI:

https://doi.org/10.4028/www.scientific.net/AST.93.70

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Online since:

October 2014

Authors:

David Sebastián*, Vincenzo Baglio, Claudia d'Urso, Alessandro Stassi, A.S. Aricò

Keywords:

Direct Methanol Fuel Cell (DMFC), Iridium, Platinum, Ruthenium

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References

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