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- W2055762992 abstract "Graphene, which is a two-dimensional layer structure of sp2-hybridized carbon, has been highlighted recently as a promising material for energy conversion. Herein, graphene-derived catalysts are developed for application in oxygen reduction reactions (ORRs) in acidic media via heat-treatment with dicyandiamide and a small amount (<1 wt.%) of transition metal. In ORRs, bare graphene exhibits 0.58 V (vs. RHE) of the onset potential; however, it increases to ∼0.9 V through modification steps and records a mass activity of 1.28 mA mg−1 at 0.75 V. Through the correlation curve between the ORR activities and the number of restacked graphene layers, it is proposed that the stacking of a few layers is desirable in the ORRs rather than a single layer catalyst. The graphene-derived catalysts exhibit graphite properties of facile electron transfer as the restacking of graphene layers increases, without degradation of the pyridinic-N on the graphene edge." @default.
- W2055762992 created "2016-06-24" @default.
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- W2055762992 date "2013-01-01" @default.
- W2055762992 modified "2023-10-16" @default.
- W2055762992 title "Enhanced electrochemical oxygen reduction reaction by restacking of N-doped single graphene layers" @default.
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- W2055762992 doi "https://doi.org/10.1039/c3ra23180a" @default.
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