Structure And Electrochemical Properties Of Licexeu1-Xtio4 Through Ion Exchange Method

Using Cerium (III) nitrate hexahydrate as Ce source, LiCexEu1-xTiO4 was synthesized by sol-gel and ion exchange method. The structural, morphological and electrochemical properties of LiCexEu1-xTiO4 were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammogram (CV), and charge-discharge cycling tests. The results show that the introduction of Ce3+ into the lattice can significantly improve the dynamic properties of the material, which is probably related to Ce-Eu-Ti synergistic effect. This synergistic effect appears as the complicated modulations in terms of lattice parameters and resulted in Ti and Ce in mixed valences. LiEu0.995Ce0.005TiO4 shows the best electrochemical performances.