Synthesis Of Nano Structured TiO₂and Its Application In Lithium Battery

Titanium（TiO₂） is regarded as one of the ideal candidates for high rateanode materials, owing not only to its structural stability and special surfaceactivity, but also to its low cost, safety and environment benignity. The lackof open channels in bulk TiO₂is the main drawback that restricts its capacityand rate capability for reversible lithium insertion and extraction. Also thepoor conduction of TiO₂inhibits the diffusion of lithium-ion and electron.Both of them had inhibited the application of TiO₂as lithium anodematerials. In this paper, the main context is the synthesis of TiO₂and TiO₂compound anode materials with nano structure, to improve the capacity andrate capacity. Furthermore microwave hydrothermal is used to synthesizeurchin-like TiO₂particles which show great capacity and rate capacity. Theresearch on the influence of reaction temperature and time are also done.Nano size TiO₂particles were synthesized with the P123, which werearrayed in the form of layer. The material shows good cycle performancewith the first discharge capacity of144mAhg-1. As the increasing ofP123,the pore space between titanium particle is reduce until the coming outof aggregates. The sample using the same weight of P123shows the bestelectrochemistry ability, which decline with the increase of P123.Carbon-coated titanium was synthesized via one-step hydrothermal by usingglucose as carbon source and CTAB as soft template. As the conductivity ofparticles increase with the carbon adding, the electrochemical performanceof the compound was enhanced. The first discharge specific capacity is198mAhg-1in the sample of15%carbon content. After100cycles, thedischarge capacity remains126mAhg-1. All samples coated with carbonshow better electrochemical performance.Urchin-like titanium particles were synthesized through microwavehydrothermal in the TTIP mixed solution which showed great electrochemical performance. A further research on the influence of reactiontemperature and time under microwave radiation was carried out, whichshowed a better morphological characterization improved theelectrochemical properties.