title: Nanoscale spinel LiFeTiO4 for intercalation pseudocapacitive Li(+) storage.
abstract: Intercalation pseudocapacitive Li(+) storage has been recognized recently in metal oxide materials, wherein Li(+) intercalation into the lattice is not solid-state diffusion-limited. This may bridge the performance gap between electrochemical capacitors and battery materials. To date, only a few materials with desired crystal structure and with well-defined nanoarchitectures have been found to exhibit such attractive behaviour. Herein, we report for the first time that nanoscale spinel LiFeTiO4 as a cathode material for Li-ion batteries exhibits intercalation pseudocapacitive Li(+) storage behaviour. Nanoscale LiFeTiO4 nanoparticles with native carbon coating were synthesized by a sol-gel route. A fast and large-amount of Li(+) storage (up to 1.6 Li(+) per formula unit over cycling) in the nanoscale LiFeTiO4 host has been achieved without compromising kinetics.
authors.affiliation: Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany. ruiyong.chen@kit.edu sylvio.indris@kit.edu.
authors.forename: Ruiyong
authors.initials: R
authors.lastname: Chen
authors.forename: Michael
authors.initials: M
authors.lastname: Knapp
authors.forename: Murat
authors.initials: M
authors.lastname: Yavuz
authors.forename: Shuhua
authors.initials: S
authors.lastname: Ren
authors.forename: Ralf
authors.initials: R
authors.lastname: Witte
authors.forename: Ralf
authors.initials: R
authors.lastname: Heinzmann
authors.forename: Horst
authors.initials: H
authors.lastname: Hahn
authors.forename: Helmut
authors.initials: H
authors.lastname: Ehrenberg
authors.forename: Sylvio
authors.initials: S
authors.lastname: Indris