title: Lithiation Confined in One Dimensional Nanospace of TiO2 (Anatase) Nanotube to Enhance the Lithium Storage Property of CuO Nanowires.
abstract: We have fabricated CuO@TiO2 nanocable arrays by a facile method involving in situ thermal oxidation of Cu foil and coating of tetrabutyl titanate solution. The structure of the nanocables has been investigated by various techniques to comfirm that the cores are mainly crystalline monoclinic CuO, and the shells are crystalline tetragonal anatase TiO2. When used as an anode material for lithium-ion batteries, the nanoconfinement effect plays an important role in improving the lithium-ion storage preformance: the lithiation will be confined in one-dimensional space of TiO2 nanotubes to limit the pulverization of CuO, and the phase interface will cause an interfacial adsorption to enrich more lithium ions at some level. Benefiting from the nanoconfinement effect and interfacial adsorption, the reversible capacity does not fade, but rather increases gradually to 725 mAh g(-1) after 400 cycles at a current density of 60 mA g(-1), superior to the theoretical capacity of CuO.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Ang
authors.initials: A
authors.lastname: Li
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Huaihe
authors.initials: H
authors.lastname: Song
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Jisheng
authors.initials: J
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P.R. China.
authors.forename: Zhaokun
authors.initials: Z
authors.lastname: Ma
keywords: CuO; TiO2; interfacial adsorption; lithium ion battery anodes; nanocable arrays; nanoconfinement effect