Abstract
Silver-coated Ti2Nb[Formula: see text]O[Formula: see text] composite microspheres were successfully prepared by a solvothermal method with a subsequent post-annealing treatment. Effect of the coating Ag nanoparticles on the electrochemical properties was extensively studied. The XRD pattern shows that high purity Ti2Nb[Formula: see text]O[Formula: see text] was formed and no impurity phases are observed. Moreover, SEM, XPS and EDX clearly revealed that Ag nanoparticles were combined on the surface area of formed Ti2Nb[Formula: see text]O[Formula: see text] microspheres. The electrochemical performance of the Ag/Ti2Nb[Formula: see text]O[Formula: see text] composite microspheres was characterized via cyclic voltammograms (CV) measurements. The CV curves indicate that the coating Ag nanoparticles minimize the polarization of pristine Ti2Nb[Formula: see text]O[Formula: see text]. The EIS indicates that the excellent rate capability of Ag/Ti2Nb[Formula: see text]O[Formula: see text] composite microspheres can be ascribed to the improved electronic conductivity due to the incorporation of Ag nanoparticles.
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