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Introduction : Charge storage devices covered a wide range of applications which required either high energy density (batteries) or high power density (capacitors). The composites such as Sn-CNTs, SnSb0.5-CNTs and CoSb3-CNTs have attracted much attention in the past years owing to their good overall properties [1,2,3]. In these samples, intermetallic compounds show high specific capacities. Recently, interest in metal oxides such as Al2O3, MgO and TiO2 has been largely stimulated by the realization that they can improve the cycling stability of the Li-ion battery electrodes [4,5,6]. The reversible capacity of the TiO2/CNTs composite reaches 168 mAh g-1 at the first cycle and remains almost constant during long-term cycling. In this study, a nanocomposite of TiO2/CNTs was prepared by sol-gel method and its electrochemical properties as anode materials for Li-ion batteries were studied by galvanostatic cycling, cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS).
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