期刊
CARBON
卷 49, 期 3, 页码 904-909出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2010.10.055
关键词
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资金
- Korea government (MEST) [2010-0000188]
- Ministry of Education, Science and Technology [R15-2008-006-03002-0]
- Ministry of Knowledge Economy, Republic of Korea [20093020030020-11-1-000]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20093020030020] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2008-0058918, 2008-0062153] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Surface-functionalized graphene nanosheets (GNSs) were synthesized from natural graphite via chemical oxidation and subsequent thermal exfoliation. High Pt metal loadings, up to 80 wt.%, were deposited over the synthesized GNS supports and the Pt particle size was maintained at less than 3 nm. The current densities of methanol electrooxidation with these Pt/GNS catalysts were at least twice as large as those observed with conventional Pt/C catalysts. Furthermore, these Pt/GNS catalysts maintained high Pt mass activities with increased Pt loading on the working electrode, ranging from 0.2 to 2.0 mg/cm(2). This improved mass activity indicates that our electrocatalysts are able to provide more efficient Pt utilization for alcohol electrooxidation compared to conventional catalysts. (C) 2010 Elsevier Ltd. All rights reserved.
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