title: Structurally and electronically designed TiO₂Nx nanofibers for lithium rechargeable batteries.
abstract: The morphology and electronic structure of metal oxides, including TiO(2) on the nanoscale, definitely determine their electronic or electrochemical properties, especially those relevant to application in energy devices. For this purpose, a concept for controlling the morphology and electrical conductivity in TiO(2), based on tuning by electrospinning, is proposed. We found that the 1D TiO(2) nanofibers surprisingly gave higher cyclic retention than 0D nanopowder, and nitrogen doping in the form of TiO(2)N(x) also caused further improvement. This is due to higher conductivity and faster Li(+) diffusion, as confirmed by electrochemical impedance spectra. Our findings provide an effective and scalable solution for energy storage efficiency.
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, North Wollongong, NSW 2500, Australia.
authors.forename: Jae-Geun
authors.initials: JG
authors.lastname: Kim
authors.forename: Dongqi
authors.initials: D
authors.lastname: Shi
authors.forename: Ki-Jeong
authors.initials: KJ
authors.lastname: Kong
authors.forename: Yoon-Uk
authors.initials: YU
authors.lastname: Heo
authors.forename: Jung Ho
authors.initials: JH
authors.lastname: Kim
authors.forename: Mi Ru
authors.initials: MR
authors.lastname: Jo
authors.forename: Yoon Cheol
authors.initials: YC
authors.lastname: Lee
authors.forename: Yong-Mook
authors.initials: YM
authors.lastname: Kang
authors.forename: Shi Xue
authors.initials: SX
authors.lastname: Dou