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Synergetic Effect of WC/Porous Graphite Carbon Supports on Electrocatalytic Reactivity of Pt for Methanol Electrooxidation

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We have employed a facile and simultaneous route to synthesize tungsten carbide/porous graphitic carbon (WC/PGC) nanocomposites with the sizes of WC nanoparticles (NPs) are about 10 nm, large special surface area and plentiful porous structures. After loading 10% Pt NPs on the synthesized WC-PGC, the synthesized Pt-WC/PGC catalysts exhibit well performance for methanol electrooxidation. The current density of Pt-WC/PGC towards methanol electrooxidation is 1.9 times as that of commercial 20% Pt/C catalyst. Moreover, the Pt-WC/PGC catalyst also shows excellent durability compared to commercial 20% Pt/C catalyst. The well performance should be attributed to tungsten carbides with the Pt-like characteristic, could improve CO tolerant, simultaneously, the large special surface area and porous structures of porous graphite carbon is favor to mass transport. The present method will lead to the commercialized development of direct methanol fuel cells.
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Keywords: LARGE SPECIAL SURFACE AREA; POROUS GRAPHITE CARBON; SUPERIOR ELECTROCATALYST; TUNGSTEN CARBIDE

Document Type: Research Article

Publication date: November 1, 2013

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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