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MM: Fachverband Metall- und Materialphysik

MM 3: Materials for Energy Storage and Conversion

MM 3.1: Vortrag

Montag, 1. April 2019, 10:15–10:30, H44

Li3OCl thin film as a solid state electrolyte — •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

In comparison with conventional batteries, solid state batteries offer safety and higher energy density. In this work, Li-rich Li3OCl is studied as a potential solid-state electrolyte in Li-Ion batteries. Thin Li3OCl films (50~200 nm) are deposited by applying a composite target (Li2CO3+LiCl) via Ion Beam Sputtering. The composition of the films is investigated by XRD and XPS, and the thickness is evaluated by FIB cross-sections. The ionic and the electrical conductivity are determined using Pt/Li3OCl/Pt structure by Electrochemical Impedance Spectroscopy and *10-7 S/cm and *10-11 S/cm are achieved respectively at 25 °C. Furthermore, the activation energy of Li3OCl is derived from the measured ionic conductivity from 25 °C up to 140 °C and is equal to 0.57 eV.