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Nanostructured mesoporous Ni Co2O4,Co3O4 and Ni O spinel oxides were prepared through the hydroxide coprecipitation method using EG(ethylene glycol) as solvent without any template.The Ni Co2O4 powders were analyzed by TGA,XRD,N2adsorption-desorption,SEM and EDS.And the electrocatalytic properties of Ni Co2O4/Ti,Co3O4/Ti and Ni O/Ti electrodes for oxygen evolution in 0.1 mol/L KOH(p H = 13)were tested by cyclic voltammetry,Tafel curves and electrolysis.The result shows that Ni Co2O4/Ti electrode has higher electrocatalytic activity in oxygen evolution reaction than Co3O4/Ti and NiO/Ti electrodes.Ni Co2O4/Ti electrode prepared at 350°C has the highest apparent current density and the highest true current density.The Tafel slope of Ni Co2O4/Ti electrode prepared at 350°C is 68.49 m V/dec.
Nanostructured mesoporous Ni Co2O4, Co3O4 and NiO spinel oxides were prepared through the hydroxide coprecipitation method using EG (ethylene glycol) as solvent without any template. The Ni Co2O4 powders were analyzed by TGA, XRD, N2adsorption-desorption, SEM and EDS. And The electrocatalytic properties of Ni Co2O4 / Ti, Co3O4 / Ti and Ni O / Ti electrodes for oxygen evolution in 0.1 mol / L KOH (p H = 13) were tested by cyclic voltammetry, Tafel curves and electrolysis. / Ti electrode has higher electrocatalytic activity in oxygen evolution reaction than Co3O4 / Ti and NiO / Ti electrodes. NiCo2O4 / Ti electrode prepared at 350 ° C has the highest apparent current density and the highest true current density. Tafel slope of Ni Co2O4 / Ti electrode prepared at 350 ° C is 68.49 mV / dec.