DGIST Scholar: The influence of Co3V2O8 morphology on the oxygen evolution reaction activity and stability

Title: The influence of Co3V2O8 morphology on the oxygen evolution reaction activity and stability

Citation: Hyun, Suyeon. (2016-02). The influence of Co3V2O8 morphology on the oxygen evolution reaction activity and stability. Electrochemistry Communications, 63, 44–47. doi: 10.1016/j.elecom.2015.12.012

Author Keywords: Oxygen evolution reaction ; Electrocatalysis ; Co3V2O8 ; Electrospinning ; Nitrogen-doped carbon

Keywords: AIR BATTERIES ; Amorphous Carbon ; Catalyst ; CATALYSTS ; Co3V2O8 ; Doping (Additives) ; EFFICIENT ; Electrocatalysis ; Electrocatalysts ; Electrocatalytic ; Electrodes ; Electrospinning ; Graphene ; METALS ; Microscopic Analysis ; Morphological Characteristic ; Nanoparticle ; Nanostructures ; NiCo2O4 ; Nitrogen ; NITROGEN-DOPED CARBON ; Nitrogen-Doped Carbons ; Noble Metal Oxides ; Oxygen ; Oxygen Evolution Reaction ; Precious Metals ; REDUCTION ; Reversible Hydrogen Electrodes ; WATER ; Zero-Dimensional

Abstract: The effect of Co3V2O8 morphology on the electrocatalytic oxygen evolution reaction (OER) activity was evaluated using one- and zero-dimensional nanostructures. The microscopic analyses reveal the existence of thin coating of nitrogen-doped amorphous carbon on the surface of Co3V2O8 nanostructures. The 1D-Co3V2O8 electrocatalyst delivers 10 mA cm-2 at overpotential of 0.350 V versus reversible hydrogen electrode for OER in 0.1 M KOH, whereas 0D-Co3V2O8 catalyst showed 0.397 V, benefited from the morphological characteristics of 1D. Moreover, the 1D-Co3V2O8 catalyst exhibits much lower OER overpotential than that of commercial noble metal oxide catalysts, RuO2 (0.41 V) and Pt/C (0.79 V). © 2015 Elsevier B.V. All rights reserved.

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