Molecules · 2019 · 24 citations · 33 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemical EngineeringElectrochemistryNanomaterialsElectrochemical CellsElectrochemical Energy ConversionElectrode MaterialsMetal Oxide NanomaterialsNanostructured Energy MaterialsRedox-active MaterialsCurrent DensityElectron TransferGraphene-based ElectrodesHybrid Electrochemical MaterialsNanoparticlesNanosheetsOxygen Evolution ReactionOxygen Reduction Reaction
In this work, an electrode material based on CuO nanoparticles (NPs)/graphene (G) is developed for ORR in alkaline medium. According to the characterization of scanning electron microscope and transmission electron microscope, CuO NPs are uniformly distributed on the wrinkled G sheets. The X-ray diffraction test reveals that the phase of CuO is monoclinic. The CuO/G hybrid electrode exhibits a positive onset potential (0.8 V), high cathodic current density (3.79 × 10−5 mA/cm2) and high electron transfer number (four-electron from O2 to H2O) for ORR in alkaline media. Compared with commercial Pt/C electrocatalyst, the CuO/G electrode also shows superior fuel durability. The high electrocatalytic activity and durability are attribute to the strong coupling between CuO NPs and G nanosheets.
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Raman Spectrum of Graphene and Graphene Layers
Andrea C. Ferrari, Jannik C. Meyer, Vittorio Scardaci et al. · Physical Review Letters · 2006 · 14.9K citations · Full text
An oxygen reduction electrocatalyst based on carbon nanotube–graphene complexes
Yanguang Li, Wu Zhou, Hailiang Wang et al. · Nature Nanotechnology · 2012 · 1.6K citations