title: Graphitic Carbon Conformal Coating of Mesoporous TiO2 Hollow Spheres for High-Performance Lithium Ion Battery Anodes.
abstract: Rational design and controllable synthesis of TiO2 based materials with unique microstructure, high reactivity, and excellent electrochemical performance for lithium ion batteries are crucially desired. In this paper, we developed a versatile route to synthesize hollow TiO2/graphitic carbon (H-TiO2/GC) spheres with superior electrochemical performance. The as-prepared mesoporous H-TiO2/GC hollow spheres present a high specific surface area (298 m(2) g(-1)), a high pore volume (0.31 cm(3) g(-1)), a large pore size (∼5 nm), well-defined hollow structure (monodispersed size of 600 nm and inner diameter of ∼400 nm, shell thickness of 100 nm), and small nanocrystals of anatase TiO2 (∼8 nm) conformably encapsulated in ultrathin graphitic carbon layers. As a result, the H-TiO2/GC hollow spheres achieve excellent electrochemical reactivity and stability as an anode material for lithium ion batteries. A high specific capacity of 137 mAh g(-1) can be achieved up to 1000 cycles at a current density of 1 A g(-1) (5 C). We believe that the mesoporous H-TiO2/GC hollow spheres are expected to be applied as a high-performance electrode material for next generation lithium ion batteries.
authors.affiliation: Centre for Clean Energy Technology, School of Mathematics and Physical Sciences, Faculty of Science, University of Technology Sydney , Sydney, New South Wales 2007, Australia.
authors.forename: Hao
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University , Shanghai 200433, P. R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University , Shanghai 200433, P. R. China.
authors.forename: Dengke
authors.initials: D
authors.lastname: Shen
authors.affiliation: Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University , Shanghai 200433, P. R. China.
authors.forename: Dongyuan
authors.initials: D
authors.lastname: Zhao
authors.affiliation: Centre for Clean Energy Technology, School of Mathematics and Physical Sciences, Faculty of Science, University of Technology Sydney , Sydney, New South Wales 2007, Australia.
authors.forename: Guoxiu
authors.initials: G
authors.lastname: Wang