Zheng Mingbo

Ultra-Long-Term Cyclability of Li_4Ti_5O_(12)/Graphene Nanocomposite Anode Material with Three-Dimensional Continuous Structure for Lithium-Ion Batteries

Li4Ti5O12/graphene nanocomposite was synthesized using thermally exfoliated graphene with a three-dimensional continuous nanoporous structure as the matrix.The precursors were introduced into the interior nanopores of thermally exfoliated graphene by the ethanol evaporation method.After heat treatment,Li4Ti5O12 nanoparticles were formed in situ in the nanopores of thermally exfoliated graphene.As an anode material for lithium-ion batteries,the three-dimensional continuous structure of thermally exfoliated graphene ensures sufficient contact between Li4Ti5O12 and graphene during the long cycling.Consequently,the nanocomposite shows superior cyclic stability.The capacity retention is still as high as 94% after 5 000 cycles at 5C.