Dr. Michaela Wilhelm, Advanced Ceramics, University of Bremen:
Polymer derived Ceramics for Energy and Separation Technology
Einladende: Profs. Aldo R. Boccaccini(WW7), Peter Greil(WW3),
Dr. Tobias Fey (WW3), Prof. Dirk Schubert (WW5)
Polymer-derived ceramics (PDCs) describe mainly Si-based advanced ceramics made by converting preceramic polymers, which have been increasingly investigated and developed throughout the last four decades. By this new application fields are established in which PDCs have been extended significantly as high-temperature-resistant materials (energy materials, aerospace, etc.), chemical engineering (catalyst support, biotechnology, etc.), or functional materials in electrical engineering as well as in micro/nanoelectronics.
This presentation will focus on the preparation and testing of multi-functional materials derived from polysiloxanes. The possibilities to adjust the shape, the porosity on different length scales and further functional properties (electron conductivity, surface characteristic) by applying different processing routes or using additional metal precursors or fillers (e.g. carbon) will be highlighted. Recent results on the development and testing of novel monolithic catalysts made by solution-based freeze casting, of electron conducting membranes as new anode materials for microbial fuel cells and porous gas diffusion layers for Zn-air batteries will be discussed.
Since this research is integrated in the frame work of the DFG research training group MIMENIMA (GRK 1860, http://www.mimenima.uni-bremen.de) this research unit will be shortly introduced as well.