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Dr. Roswitha Zeis

Investigation of Overpotentials in High Temperature Proton Exchange Membrane Fuel Cells
Electrochemical Energy Conversion and Storage, High Temperature Proton Exchange Membrane Fuel Cells, Electrochemistry
Gruppe: Helmholtz
Tel.: +49 731 9530-823
Fax: +49 731 9530-666
roswitha zeisLsx5∂kit edu

Helmholtz Institute Ulm (HIU) / Center for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW)

Helmholtzstr. 8

89081 Ulm, Germany


High temperature proton exchange membrane fuel cells (HT-PEMFC) based on phosphoric acid
doped polybenzimidazole (H3PO4/PBI) membrane is a relatively new and fast growing research
field. Compared with the conventional low-temperature PEMFC, the HT-PEMFC has much higher
tolerance to impurities such as CO in the hydrogen fuel and much simplified thermal and water
management because of its elevated operation temperature, typically in the range from 150°C
to 200°C. At this moment, however, no commercial HT-PEMFCs have been developed to meet
the reliability and cost requirement. The young investigator group is exploring this field
to understand the performance limiting mechanisms and try to find effective solutions.