| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 178700 | Electrochemistry Communications | 2016 | 4 Pages |
•One- and zero-dimensional Co3V2O8 nanostructures were prepared.•1D-Co3V2O8 catalyst shows the lowest OER overpotential compared with 0D-Co3V2O8, and RuO2.•Well-designed 1D-Co3V2O8 catalyst exhibits better OER stability than 0D-Co3V2O8.
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).
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