title: Transport of External Lithium Along Phase Boundary in LiF-Ti Nanocomposite Thin Films.
abstract: The electronic and ionic conductivity of the LiF-Ti nanocomposite films prepared by the co-sputtering have been investigated by the method of impedance spectrum (IS), current-voltage curves (IV) and isothermal transient ionic current (ITIC) measurements. It is found that the ionic conductivity of the obtained LiF-Ti nanocomposite film is very low. After electrochemical and chemical lithiation, ionic conductivities of the lithiated composite films are increased to be 10-3 and 10-4 S/cm separately. This phenomenon indicates that the phase boundary between LiF and Ti could be the ionic conducting channels for external lithium in the LiF-Ti nanocomposite. Our results suggest a new strategy to design ionic or mixed ionic conductor.
authors.forename: Hao
authors.initials: H
authors.lastname: Zheng
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.forename: Jieyun
authors.initials: J
authors.lastname: Zheng
authors.forename: Jian
authors.initials: J
authors.lastname: Gao
authors.forename: Hong
authors.initials: H
authors.lastname: Li