Dresden 2017 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 33: Transport II - charge transport
MM 33.3: Talk
Tuesday, March 21, 2017, 12:30–12:45, IFW D
Investigation of the conductivity-(micro-)structure correlation in Rectorite — •Wolfram Münchgesang1, Anastasia Vyalikh1, Juliane Weise1, Maria T. Atanasova2,3, Walter W. Focke3, Gregor Mali4, and Dirk C. Meyer1 — 1Technische Universität Bergakademie Freiberg, Institut für Experimentelle Physik, Freiberg, Germany — 2Council for Geoscience, Pretoria, South Africa — 3Institute of Applied Materials, Department of Chemical Engineering, University of Pretoria, Hatfield, South Africa — 4National Institute of Chemistry, Ljubljana, Slovenia
The mixed-layer structure of Rectorite (Rt), made up of alternating nonexpandable (mica) and expandable (smectite) layers in a 1:1 ratio, can be used to transport and intercalate mobile ions like Na+, Li+, Sr2+ and Mg+. Therefore Rt is in principle suitable as solid electrolyte and electrode in batteries. Starting from a crystallographic point of view, the changes of the temperature-depending complex conductivity of Rt with different by hydration replaced mobile species are discussed and correlated to structural and chemical data from solid-state nuclear magnetic resonance (NMR), powder diffractometry (PXRD) and X-ray photoelectron spectroscopy (XPS) measurements.
This work is financed by the Federal Ministry of Education and Research (BMBF) within the project SyNeSteSia (grant no 05K2014).