Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 33: Poster: Charged Soft Matter
CPP 33.5: Poster
Mittwoch, 13. März 2013, 16:30–18:30, Poster C
Thin films of lithium containing block copolymer electrolyte — •Simon Brunner1, Ezzeldin Metwalli1, Martin Baumann1, William Hefter1, Man Nie1, Volker Körstgens1, Jan Perlich2, Stephan V. Roth2, and Peter Müller-Buschbaum1 — 1TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany — 2HASYLAB at DESY, Notkestr. 85, 22603 Hamburg, Germany
In the light of an increasing demand on power sources for portable electronic devices, nano-scaled lithium based membranes pave the way for new opportunities regarding design, application and integration of rechargeable batteries. In this work, thin hybrid films [1] based on block copolymer electrolytes and lithium salt are investigated using grazing-incidence small angle x-ray scattering (GISAXS) and real space techniques such as SEM, AFM and optical microscopy. In both bulk and thin film format of the lithium-polymer nanocomposite, lithium ions were found to prevent the crystallization of PEO and an enhanced micro-phase separation is observed as evident by both SAXS and GISAXS investigations. Probes of lithium containing thin films sandwiched between two metal electrodes were prepared and the film conductivity is measured using impedance spectroscopy. The effects of salt concentration and membrane morphology on the ionic conductivity are demonstrated.
[1] E. Metwalli, M. Nie, V. Körstgens, J. Perlich, S.V. Roth, P. Müller-Buschbaum, Macromol. Chem. Phys. 212, 1742-1750 (2011).