Rational Design of Three-Dimensional TiO2 for Use in Li-Ion Battery

Although high surface area and short lithium ion diffusion of nano-structure have dramatically improved the performance as the Li ion battery until now, inevitably accompanying problems such as electrode side reaction or structural instability made one develop for rationally designed architecture. In this research, a rational design of TiO₂ architecture is exploited in order to elicit its intrinsic Li storage performance. We proposed the 3D dendritic TiO₂ sphere as an idealized architecture which comprised of specialized nanorods. When fabricated into an electrode, the 3D dendritic TiO₂ sphere is capable of delivering an outstanding efficiency in conjunction with long cycle charge/discharge stability. This approach, which is based on theoretical studies and experimental validation, provides guidance for tailoring electrode materials for use in Li storage systems.