Acid-doped Polybenzimidazole Membranes as Electrolyte for Fuel Cells Operating Above 100°C

Li Qingfeng, Jens Oluf Jensen, Ronhuan He, Xiao Gang, Ji-An Gao, Rolf W. Berg, Hans Aage Hjuler, Erik Hennesø, Niels Bjerrum

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review


The technical achievement and challenges for the PEMFC technology based on perfluorosulfonic acid (PFSA) polymer membranes (e.g. Nafion®) are briefly discussed. The newest development in the field is alternative polymer electrolytes for operation above 100°C. As one of the successful approaches to high operational temperatures, the development and evaluation of acid doped PBI membranes are reviewed, covering polymer synthesis, membrane casting, acid doping, physiochemical characterization and fuel cell tests. A high temperature PEMFC system operational at up to 200°C is demonstrated with no gas humidification and high CO-tolerance up to 10 vol%. This high CO tolerance allows for a direct use of reformed hydrogen without further CO removal, which opens the possibility for an integrated reformer-fuel cell system. The content of this review is to a large extent based on research performed by the authors´ group.
Original languageEnglish
Title of host publicationRecent Research Developments in Electrochemistry
Place of PublicationKerala, India
PublisherTransworld Research Network
Publication date2003
ISBN (Print)81-7895-107-X
Publication statusPublished - 2003
SeriesRecent Research Developments in Electrochemistry

Bibliographical note

Editor: S.G. Pandalai, Transworld Research Network, Trivandrum, India.


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