title: The fast filling of nano-SnO2 in CNTs by vacuum absorption: a new approach to realize cyclic durable anodes for lithium ion batteries.
abstract: CNTs filled with amorphous-nanocrystalline SnO2, as a unique SnO2-based nanocomposite structure, were synthesized by a rapid vacuum absorption followed by calcination. The SnO2/CNT nanocomposite anodes had a much higher Li storage capacity than the pristine CNTs, as well as a markedly improved cyclic performance (430 mA h g(-1) after 300 cycles at 0.1 A g(-1)). These superior electrode properties resulted from the unique feature of the amorphous-nanocrystalline mixture of tin oxides stored in the CNT tubes of this nanocomposite, because this structure accommodated the stress and confined the volume change of Li(+) insertion/desertion in Sn. Although the nanocomposites had a large initial irreversible capacity loss due to SEI formation, it could be dramatically reduced by prelithiation treatment of the nanocomposite electrode.
authors.affiliation: School of Materials Science and Engineering, South China University of Technology, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, Guangzhou 510640, P.R. China. memzhu@scut.edu.cn.
authors.forename: Renzong
authors.initials: R
authors.lastname: Hu
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.forename: Hui
authors.initials: H
authors.lastname: Liu
authors.forename: Meiqin
authors.initials: M
authors.lastname: Zeng
authors.forename: Min
authors.initials: M
authors.lastname: Zhu
mesh_terms: D000042:Absorption; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D007477:Ions; D037742:Nanotubes, Carbon; D017971:Tin Compounds; D008094:Lithium; C045358:stannic oxide