Veranstaltung

Vortragende Person/Vortragende Personen:
Prof. Dr. Thomas F. Fässler, TU München

Diese Veranstaltung ist Teil der Veranstaltungsreihe „GDCh-Kolloquium“.

Fundamental research is applied research in the long term” – with this guideline we develop inorganic synthesis methods at the interface between inorganic molecular chemistry and solid‐state chemistry with focus on energy‐related materials. We investigate alloys and semiconductors with regard to thermoelectrics, photovoltaics, superconductors and materials for energy storage technologies such as anodes and solid electrolytes. The specific synthesis methods enable small well‐defined (semi)metal atom clusters to be transferred from alloys into solution, which themselves form the basis for unconventional materials such as mesostructured semiconductor films for hybrid solar cells or thin film electrodes. With
this research at the frontier of disciplines, this work also contributes strongly to the fundamental understanding of classes of materials such as the establishment of the term “intermetalloid clusters” for compounds at the boundary of complex molecules and metal alloys, which extends the classical understanding of the atomic structure of substances.

Beside other results this lecture focuses on superionic conductors as solid‐state electrolyte materials that are essential for the use for all‐solid‐state lithium ion batteries. We report on the recent discovery of a novel class of phosphide‐based materials as ionic conductors comprising the extremely high charged ions [TtP₄ ]^8‐ (Tt = tetrel = Si, Ge, Sn) and [TrP₄ ]^9‐ (Tr = triel = Al, In, Ga) as building units including examples such as Li₈SiP₄ and Li₁₄SiP₆ Li₉ AlP₄ α‐ and ß‐Li₈ SnP₄ and many others with conductivities for the pristine materials up to 3 mScm^‐1 at a very low theoretical density.