title: Synthesis of nanostructured LiMn2O4thin films by glancing angle deposition for Li-ion battery applications.
abstract: The development of electric vehicles and portable electronic devices demands lighter and thinner batteries with improved specific charge and rate capabilities. In this work, thin films of LiMn2O4were fabricated by rf magnetron sputtering. Glancing angle deposition is introduced as a promising approach for fabrication of porous cathode thin films with 2.6 times the capacity in comparison with conventionally sputtered films of the same thickness. Surface morphology and crystallinity of the films are studied along with their electrochemical performance in an aqueous electrolyte. The glancing angle deposited films can reach a rate capability of up to 4 mA cm-2with minimal energy loss, and a life cycle longer than 100 charge/discharge cycles.
authors.affiliation: Institute for Materials, Faculty of Mechanical Engineering, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Borhani-Haghighi
authors.forename: C
authors.initials: C
authors.lastname: Khare
authors.forename: R
authors.initials: R
authors.lastname: Trócoli
authors.forename: A
authors.initials: A
authors.lastname: Dushina
authors.forename: M
authors.initials: M
authors.lastname: Kieschnick
authors.forename: F
authors.initials: F
authors.lastname: LaMantia
authors.forename: A
authors.initials: A
authors.lastname: Ludwig