Regensburg 2019 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 20: Poster session II

MM 20.25: Poster

Dienstag, 2. April 2019, 18:30–20:00, Poster C

LFP/Li3OCl/Si all solid state thin film battery — •Kun Zhang, Efi Hadjixenophontos, Yug Joshi, and Guido Schmitz — Chair of Materials Physics, Institute of Materials Science, University of Stuttgart, Heisenberg Straße 3, 705969 GERMANY

Due to the high energy density and excellent flame resistance of solid state batteries, the cruising range of vehicles could possibly be improved and the danger of spontaneous combustion avoided, if all-solid-state batteries become available. In this work, it is studied to which extent Li3OCl could be used as membrane in thin film all-solid-state batteries. Ion beam sputtering from a composite target of (Li2CO3+LiCl) give rise to smooth films of controlled thickness in the 100 nm to 500 nm range. The ionic conductivity is measured from RT up to 140 °C and the activation energy is evaluated to be equal to 0.57eV. A complete full battery is deposited by adding LFP and Si as thin film cathode and anode electrodes. The potential window and the capacity of the tri-layer system are investigated by Cyclic Voltammetry.