Angewandte Chemie International Edition · 2016 · 144 citations · 45 references
Natural SciencesChemistryMaterials ScienceMaterials ChemistryNanomaterialsNanotechnologyCatalyst DesignCatalyst PreparationCatalyst SynthesisCatalytic MaterialsElectrode MaterialsMetal SulfidesCurrent DensityElectrocatalyst DesignElectrocatalystsElectrocatalytic NanomaterialsHydrogen Evolution CatalystsMetal Sulfide NanomaterialsNanostructured CatalystsNon-precious Metal Catalysts
Increasing the active edge sites of molybdenum disulfide (MoS2 ) is an efficient strategy to improve the overall activity of MoS2 for the hydrogen-evolution reaction (HER). Herein, we report a strategy to synthesize the ultrasmall donut-shaped Cu7 S4 @MoS2 hetero-nanoframes with abundant active MoS2 edge sites as alternatives to platinum (Pt) as efficient HER electrocatalysts. These nanoframes demonstrate an ultrahigh activity with 200 mA cm(-2) current density at only 206 mV overpotential using a carbon-rod counter electrode. The finding may provide guidelines for the design and synthesis of efficient and non-precious chalcogenide nanoframe catalysts.
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