Carbon innercoated ordered porous TiO2 as anode materials for lithium-ion batteries

Carbon innercoated ordered porous TiO2 were prepared by anodic oxidation of pure titanium sheets, followed by in situ decomposition of glucose in the TiO2. Structure, morphology, and electrochemical properties of the composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and a variety of electrochemical testing techniques. Initial discharge capacity and cycling performance of ordered porous TiO2 were improved dramatically by the inner carbon coating. Migration of Li ions and electrons in the carbon layer was beneficial to suppress the charge transfer resistance of TiO2 electrode, which resulted in significant improvement in electrochemical performances.