Synthesis of Porous Hollow Spheres Co@TiO(2−x)-Carbon Composites for Highly Efficient Lithium-Ion Batteries

The hollow TiO(2) anode material has received great attention for next-generation LIBs because of its excellent stability, environmental friendly, and low volume change during lithiation/delithiation. However, there are some problems associated with the current anatase TiO(2) anode materials in practical application owing to low lithium-ion diffusivity and poor reversible theoretical capacities. The introduction of defects has been turned out to be a significant and effective method to improve electronic conductivity, especially oxygen vacancies. In this paper, a facile hydrothermal reaction and subsequent chemical vapor deposition method were successfully used to fabricate Co@TiO(2−x)-carbon hollow nanospheres. These results suggest that the synthesized product exhibits good rate performance and superior cycling stability.