title: Soft-Templated Self-Assembly of Mesoporous Anatase TiO2/Carbon Composite Nanospheres for High-Performance Lithium Ion Batteries.
abstract: Mesoporous anatase TiO2/carbon composite nanospheres (designated as meso-ATCCNs) were successfully synthesized via a facile soft-templated self-assembly followed by thermal treatment. Structural and morphological analyses reveal that the as-synthesized meso-ATCCNs are composed of primary TiO2 nanoparticles (∼5 nm), combined with in situ deposited carbon either on the surface or between the primary TiO2 nanoparticles. When cycled in an extended voltage window from 0.01 to 3.0 V, meso-ATCCNs exhibit excellent rate capabilities (413.7, 289.7, and 206.8 mAh g(-1) at 200, 1000, and 3000 mA g(-1), respectively) as well as stable cyclability (90% capacity retention over 500 cycles at 1000 mA g(-1)). Compared with both mesoporous TiO2 nanospheres and bulk TiO2, the superior electrochemical performance of the meso-ATCCNs electrode could be ascribed to a synergetic effect induced by hierarchical structure that includes uniform TiO2 nanoparticles, the presence of hydrothermal carbon derived from phenolic resols, a high surface area, and open mesoporosity.
authors.affiliation: Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Ruofei
authors.initials: R
authors.lastname: Wu
authors.affiliation: Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Shuiyun
authors.initials: S
authors.lastname: Shen
authors.affiliation: Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Xia
authors.affiliation: Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Fengjuan
authors.initials: F
authors.lastname: Zhu
authors.affiliation: Department of Civil and Environmental Engineering, University of Michigan , Ann Arbor, Michigan 48109-2125, United States.
authors.forename: Christian
authors.initials: C
authors.lastname: Lastoskie
authors.affiliation: Institute of Fuel Cells, MOE Key Laboratory of Power & Machinery Engineering, Shanghai Jiao Tong University , Shanghai 200240, China.
authors.forename: Junliang
authors.initials: J
authors.lastname: Zhang
keywords: HC-resol; TiO2 nanoparticles; composite electrode; hierarchical structure; lithium ion batteries; soft-templated self-assembly; synergetic effect