Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 15: Solid-Liquid Interfaces: Structure, Spectroscopy II
O 15.1: Vortrag
Montag, 20. März 2017, 15:00–15:15, WIL B321
Analysis and improvement of high energy Li-S battery systems — •Olga Grätz1, Ivan Raguzin1, Claudia Zech2, Svetlozar Ivanov3, Burkhard Beckhoff2, and Manfred Stamm1 — 1Leibniz-Institut für Polymerforschung, Dresden, Germany — 2Physikalisch-Technische Bundesanstalt, Berlin, Germany — 3Technische Universität Ilmenau, Germany
Energy storage is one of the main concerns of our days. The vastly used lithium-ion battery is close to its theoretical limit; therefore a new system is needed. Lithium-sulphur cells have been intensely researched on for the last year, but there is still much to improve. The aim of the present project is to analyse and identify the processes taking place in a working cell and to propose solutions to the existent issues.
On one side we are focusing on the investigation of particular parts (building blocks) of the cells: current collectors, cathodes and electrolytes. On the other, we are trying to observe the processes inside of a battery. We identify the single elements participating on each reaction step via X-ray fluorescence spectrometry (XRF) and X-ray absorption spectrometry (XAS).