Preparation and Characterization of Highly Stable Ionomers and Ionomer Membranes for Medium Temperature Fuel Cells

• Applicant: Dr. Jochen Kerres
• Subject Area: Preparatory and Physical Chemistry of Polymers
• Term: from 2004 to 2009
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 5417392

• Final Report Year: 2008

Final Report Abstract

From PFPT polymers, partially oxidized products could be obtained which contain both sulfoxide and sulfone groups in the polymer main chain. Sulfonation of these polymers led so far only to cross-linked products which made the formation of proton-conductive membranes from these polymers impossible up to now. Since the duration of this project was only 4 months/2 man-months, the time for obtaining a good proton-conductive and chemically stable membrane was too short. However, the obtained results were promising, and we think that it is worth to continue this scientific work – creation of sulfonated and partially fluorinated poly(sulfone)s in a new project.