Electrocatalytic Performances of NiCo2O4 Nanowires for H2O2 Eectroreduction

Abstract

Abstract: Ni foam supported-NiCo2O4 nanowires as cathode catalyst for electroreduction of hydrogen peroxide were reported. Ni foam supported-NiCo2O4 nanowires were prepared by a template-free growth method, and characterized by X-ray diffraction spectroscopy(XRD) and scanning electron microscopy(SEM). Electrocatalytic performances of Ni foam supported-NiCo2O4 nanowires for H2O2 electrochemical reduction were investigated by cyclic voltammetry and chronoamperometry. The results show that a current density of 125 mA/cm2 in 0.4 mol/L H2O2 and 3.0 mol/L NaOH is achieved at -0.4 V(vs. Ag/AgCl) by cyclic voltammetry, and the chronoamperometric current densities remain nearly constant within a 30 min test period at -0.2, -0.3 and -0.4 V, respectively. The results indicate that Ni foam supported-NiCo2O4 nanowires as cathode catalyst have considerable activity and stability for H2O2 electroreduction in alkaline medium.

Key words: NiCo2O4 nanowire, Template-free growth method, Hydrogen peroxide, Electroreduction

TrendMD:

WANG Gui-Ling*, HAO Shi-Yang, LU Tian-Hong, CAO Dian-Xue, YIN Cui-Lei. Electrocatalytic Performances of NiCo2O4 Nanowires for H2O2 Eectroreduction[J]. Chem. J. Chinese Universities, 2010, 31(11): 2264.

References

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