Sol-Gel Design Strategy for Ultradispersed TiO2 Nanoparticles on Graphene for High-Performance Lithium Ion Batteries

The rational design and controllable synthesis of strongly coupled inorganic/graphene hybrids represents a long-standing challenge for developing advanced catalysts and energy-storage materials. Here, we report a simple sol gel method toward creating ultradispersed TiO2 nanoparticles on graphene with an unprecedented degree of control based on the precise separation and manipulation of nanoparticles nucleated, grown, anchored, and crystallized and the reduction of graphene oxide (GO). The hybrid materials show ultradispersed anatase nanoparticles (similar to 5 nm), ultrathin thickness (<= 3 layers), and a high surface area of similar to 229 m(2)/g and exhibit a high specific capacity of similar to 94 mA h g(-1) at similar to 59 C, which is twice as that of mechanically mixed composites (similar to 41 mA h g(-1)), demonstrating the potential of strongly synergistic coupling effects for advanced functional systems.