| 초록 |
The application of lithium rechargeable batteries to such power storage devices increases concern about battery safety. Active material for lithium ion batteries was encapsulated with TiO2 and SiO2 layer via a sol-gel reaction with titanium and silicon alkoxides and, followed by a thermal treatment process. The pore size distribution of TiO2 and SiO2 layer was controlled by the variation of precursor and catalyst, which affected the electrochemical performance of active material. The electrochemical and structural properties of nanocomposites with different surface areas of encapsulating TiO2 and SiO2 layer were characterized by X-ray diffraction (XRD), the nitrogen gas adsorption analysis by the Brunauer-Emmett-Teller (BET) equation, transmission electron microscope (TEM), and galvanostatic charge-discharge experiments. |
