Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 12, Issue 1, Pages 129-131Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.11.005
Keywords
Graphene nanosheet; Methanol; Electro-oxidation; 80% Metal content; PtRu electrocatalysts
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Funding
- Ministry of Knowledge Economy, Republic of Korea [20093020030020-11-1-000]
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Graphene nanosheet was prepared by modified Hummer's chemical method and utilized as a catalyst support of PtRu nanoparticles for the electro-oxidation of methanol. Home-made graphene nanosheet was clearly characterized by Raman spectroscopy and we applied colloidal method to synthesize with high metal content of 80 wt.% Pt-Ru catalyst, which is extensively clarified by HR-TEM and XRD analysis. 80 wt.% Pt-Ru/graphene nanosheet catalyst showed superior electrochemical activity toward methanol oxidation compared to Pt-Ru/Vulcan XC-72R. It is due to the significant increase of electrochemical active surface area for better catalyst utilization. (C) 2009 Elsevier B.V. All rights reserved.
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