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- W2042181014 abstract "This study demonstrates that platinum–ruthenium (PtRu) nanoclusters decorated on a composite consisting of graphene sheets (GS) and carbon nanotubes (CNTs), denoted as PtRu/GS-CNT, show highly electrocatalytic activity for methanol oxidation with excellent carbon monoxide (CO) tolerance. Herein, restacking of individual GS is effectively inhibited by introducing one-dimensional CNTs to form a 3-D porous microstructure. From the SEM image, CNTs act as useful nanospacers for diminishing the face-to-face aggregation of GS. This 3-D porous structure exposes extensive surface area for evenly depositing PtRu nanoclusters and facilitates the electrolyte/reactant diffusion, leading to the highly catalytic performances of resultant materials. The voltammetric forward peak current density to the reverse peak current density for PtRu/GS-CNT (If/Ib = 6.33) is much higher than that of commercial catalyst, PtRu/Vulcan XC-72 (If/Ib = 1.33), revealing the synergistic effects between GS and CNT on enhancing electrochemical activities of PtRu nanoclusters for the methanol oxidation and the carbon monoxide (CO) tolerance. Therefore, the 3-D GS-CNT nanocomposite is a promising support material for dispersing noble metal catalysts in the fuel cell applications." @default.
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- W2042181014 date "2013-01-01" @default.
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- W2042181014 title "Three-dimensionally porous graphene–carbon nanotube composite-supported PtRu catalysts with an ultrahigh electrocatalytic activity for methanol oxidation" @default.
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- W2042181014 doi "https://doi.org/10.1016/j.electacta.2012.09.013" @default.
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