title: Colloidal BiF3 nanocrystals: a bottom-up approach to conversion-type Li-ion cathodes.
abstract: A facile colloidal synthesis of BiF3 nanocrystals (NCs) via thermal decomposition of bismuth(III) trifluoroacetate in oleylamine is reported. The NC size can be tuned from 6 to 40 nm by the adjustment of synthesis parameters. After removal of the capping surfactant molecules, BiF3 NCs were tested as a cathode material for Li-ion batteries. Close to theoretical Li-ion storage capacities of up to 300 mA h g(-1) at an average voltage of 3 V were obtained at a current density of 50 mA g(-1).
authors.affiliation: ETH Zürich - Swiss Federal Institute of Technology Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland. mvkovalenko@ethz.ch.
authors.forename: Marek F
authors.initials: MF
authors.lastname: Oszajca
authors.forename: Kostiantyn V
authors.initials: KV
authors.lastname: Kravchyk
authors.forename: Marc
authors.initials: M
authors.lastname: Walter
authors.forename: Franziska
authors.initials: F
authors.lastname: Krieg
authors.forename: Maryna I
authors.initials: MI
authors.lastname: Bodnarchuk
authors.forename: Maksym V
authors.initials: MV
authors.lastname: Kovalenko