SKM 2021 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: Poster Session III
CPP 8.19: Poster
Mittwoch, 29. September 2021, 17:30–19:30, P
The influence of toluene in a Si/Ge sol-gel approach — •Christian L. Weindl1, Christian Fajman2, Michael A. Giebel2, Matthias Schwarzkopf3, Stephan V. Roth3, 4, Thomas F. Fässler2, and Peter Müller-Buschbaum1,5 — 1Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 2Lehrstuhl für Anorganische Chemie mit Schwerpunkt Neue Materialien, Chemie Department, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany — 3Deutsches Elektronen-Synchrotron DESY, Notkestr.85, 22607 Hamburg, Germany — 4Royal Institute of Technology KTH, Teknikringen 34-35, 10044 Stockholm, Sweden — 5Heinz Maier-Leibniz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
The latest research has revealed promising results for Silicon (Si) and Germanium (Ge) as anode materials for lithium-ion batteries (LIBs). Owing to their high energy capacity these two group 14 semiconductors are considered as auspicious alternatives to graphite anodes in LIBs. In this study, we set the goal of synthesizing a porous silicon-germanium structure over a well-known wet chemical sol-gel approach. Here, the amphiphilic diblock copolymer polystyrene-block-polyethylene oxide (PS-b-PEO) is used as the structuring agent. In the experiment, we investigate the structural difference that occurs when toluene is used as an additive. Real-space data as SEM and EDX spectroscopy will be discussed with reciprocal-space analysis methods as GISAXS.