摘要
TiO2 nanocrystals/graphene hybrids（TiO2-G） with ultrafine TiO2 nanocrystals（7 nm in size） conformally coated on ultrathin graphene nanosheets（ 2 layers thick） were successfully prepared via a facile one-pot solvothermal route under mediated conditions.With the feature of large surface area,abundant mesopores and high thermal stability,the TiOi-G nanohybrids exhibited large reversible Li-ion storage capacity with excellent cycling stability（629 mAh·g-1 after 400 cycles at a current of 60 mA·g-1） and good rate capability（184 mAh·g-1 at a current density of 3 A·g-1） due to the synergetic effects and strong interactions between the components,showing great promise in applications for advanced energy storage devices.
TiO2 nanocrystals/graphene hybrids（TiO2-G） with ultrafine TiO2 nanocrystals（7 nm in size） conformally coated on ultrathin graphene nanosheets（ 2 layers thick） were successfully prepared via a facile one-pot solvothermal route under mediated conditions.With the feature of large surface area,abundant mesopores and high thermal stability,the TiOi-G nanohybrids exhibited large reversible Li-ion storage capacity with excellent cycling stability（629 mAh·g-1 after 400 cycles at a current of 60 mA·g-1） and good rate capability（184 mAh·g-1 at a current density of 3 A·g-1） due to the synergetic effects and strong interactions between the components,showing great promise in applications for advanced energy storage devices.
基金
supported by the National Natural Science Foundation of China(51071131)
the Program for New Century Excellent Talents in University(NCET-10-0890)
