title: Constructing hierarchical submicrotubes from interconnected TiO₂ nanocrystals for high reversible capacity and long-life lithium-ion batteries.
abstract: Here, we report a facile hydrothermal approach for synthesizing anatase TiO2 hierarchical mesoporous submicrotubes (ATHMSs) with the aid of long-chain polymer as soft template. The TiO2 nanocrystals, with sizes of 6-8 nm, are well interconnected with each other to build tubular architectures with diameters of 0.3-1.5 μm and lengths of 10-25 μm. Such highly porous structures give rise to very large specific surface area of 201.9 m(2) g(-1) and 136.8 m(2) g(-1) for the as-prepared and annealed samples, respectively. By using structurally stable ATHMSs as anode materials for lithium-ion batteries, they exhibited high reversible capacity, long cycling life and excellent cycling stability. Even after 1000 cycles, such ATHMS electrodes retained a reversible discharge capacity as high as 150 mAh g(-1) at the current density of 1700 mA g(-1), maintaining 92% of the initial discharge capacity (163 mAh g(-1)).
authors.affiliation: 1] School of Physics and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China [2] College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang, 110136, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Xin
authors.affiliation: School of Physics and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Physics and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Baojun
authors.initials: B
authors.lastname: Li
authors.affiliation: School of Physics and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Physics and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Shen
authors.affiliation: Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Wenxia
authors.initials: W
authors.lastname: Zhao
authors.affiliation: Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou 510275, China.
authors.forename: Chaolun
authors.initials: C
authors.lastname: Liang