Graphene supported electrocatalysts for methanol oxidation |
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| Authors: | Sungyool Bong Yang-Rae Kim In Kim Seunghee Woo Sunghyun Uhm Jaeyoung Lee Hasuck Kim |
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| Affiliation: | 1. Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea;2. Ertl Center for Electrochemistry and Catalysis, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea |
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| Abstract: | 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. |
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