title: Mesoporous and Nanostructured TiO2layer with Ultra-High Loading on Nitrogen-Doped Carbon Foams as Flexible and Free-Standing Electrodes for Lithium-Ion Batteries.
abstract: A simple and green method is developed for the preparation of nanostructured TiO2supported on nitrogen-doped carbon foams (NCFs) as a free-standing and flexible electrode for lithium-ion batteries (LIBs), in which the TiO2with 2.5-4 times higher loading than the conventional TiO2-based flexible electrodes acts as the active material. In addition, the NCFs act as a flexible substrate and efficient conductive networks. The nanocrystalline TiO2with a uniform size of ≈10 nm form a mesoporous layer covering the wall of the carbon foam. When used directly as a flexible electrode in a LIB, a capacity of 188 mA h g-1is achieved at a current density of 200 mA g-1for a potential window of 1.0-3.0 V, and a specific capacity of 149 mA h g-1after 100 cycles at a current density of 1000 mA g-1is maintained. The highly conductive NCF and flexible network, the mesoporous structure and nanocrystalline size of the TiO2phase, the firm adhesion of TiO2over the wall of the NCFs, the small volume change in the TiO2during the charge/discharge processes, and the high cut-off potential contribute to the excellent capacity, rate capability, and cycling stability of the TiO2/NCFs flexible electrode.
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.
authors.forename: Shiyong
authors.initials: S
authors.lastname: Chu
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.
authors.forename: Yijun
authors.initials: Y
authors.lastname: Zhong
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.
authors.forename: Rui
authors.initials: R
authors.lastname: Cai
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.
authors.forename: Zhaobao
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.
authors.forename: Shenying
authors.initials: S
authors.lastname: Wei
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing, 210009, P. R. China.|Department of Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia.
authors.forename: Zongping
authors.initials: Z
authors.lastname: Shao
keywords: TiO2 nanoparticles; flexible electrodes; high loading; lithium-ion batteries; nitrogen-doped carbon foams