Regensburg 2007 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 20: POSTER: Biological Systems + New Materials
CPP 20.17: Poster
Mittwoch, 28. März 2007, 16:00–18:30, Poster B
Surface science investigations of cellulose, lignin and polymer compounds based on them for applications in fuel cells — Stefan Krischok1, Syed Imad-Uddin Ahmed1, •Andreas Comouth1, Marcel Himmerlich1, Rosina Staneva1, Axel Kauffmann2, Jürgen Pfitzer3, M. Huber4, Wolfgang Bengel5, and Juergen A. Schaefer1 — 1Institute für Physik und Institut für Mikro- und Nanotechnologien, Technische Universität Ilmenau, P.O. Box 100565, 98684 Ilmenau, Germany — 2Fraunhofer Institut für Chemische Technologie (ICT), Joseph-von-Fraunhofer-Straße 7, 76327 Pfinztal, Germany — 3TECNARO GmbH, Burgweg 5, 74360 Ilsfeld-Auenstein, Germany — 4SFC Smart Fuel Cell AG, Eugen-Sänger-Ring 4, 85649 Brunnthal-Nord, Germany — 5Biomasseprojekt GmbH, Fritz-Reichle-Ring 4, 78351 Radolfzell, Germany
Research in fuel cells has intensified due to their potential in various fields. One of the main fuel cell components - the bipolar plate, is currently based on metals or graphite. A pyrolyzed cellulose- and lignin-based polymer compound shows excellent potential. However, various critical issues still need to be addressed, such as impurity poisoning in Direct Methanol Fuel Cells (DMFC). In this context, X-ray photoelectron spectroscopy (XPS), X-ray Diffraction (XRD) and thermal desorption provide important indications about the presence of impurities, degree of pyrolysis and desorption processes occurring during pyrolysis. Such knowledge enables an optimization of the material composition and pyrolysis parameters, thus making it suitable for fuel cell applications.