PTFE-based high-temperature proton-conducting membrane

S. Reichman*, A. Ulus, E. Peled

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The demand for a Solid Polymer Electrolyte Membrane (SPEM) for fuel-cell systems, capable of withstanding temperatures above 130°C, decreasing the electrode-catalyst loadings and reducing poisoning by carbon monoxide, has prompted this study. A novel, low-cost, highly conductive, nanoporous proton-conducting membrane (NP-PCM) based on a polytetrafluoroethylene (PTFE) backbone has been developed. It comprises a non-conductive nano-size ceramic powder, PTFE binder and an aqueous acid. Impregnation of the ceramic powder into the membrane substrate was carried out by sol-gel synthesis. The preparation procedures were studied and the membrane was characterized with the use of: PSD, SEM, EDS, DSC, FTIR and electrochemical methods. A non-optimized direct-methanol fuel cell (DMFC) with a 137 μm-thick membrane was assembled. It demonstrated 133 at 80°C, 0.05 atm. dry air (1.9 stoich Future study will be directed to optimizing the Membrane-Electrode- Assembly (MEA) preparation process and testing of both DMFCs and H 2-FCs at high temperatures. copyright The Electrochemical Society.

Original languageEnglish
Title of host publicationProton Exchange Membrane Fuel Cells V, In Honor of Supramaniam Srinivasan
PublisherElectrochemical Society Inc.
Number of pages10
ISBN (Electronic)1566774969
ISBN (Print)1566774969, 9781566774963
StatePublished - 2006
Event208th Meeting of the Electrochemical Society - Los Angeles, CA, United States
Duration: 16 Oct 200521 Oct 2005

Publication series

NameECS Transactions
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


Conference208th Meeting of the Electrochemical Society
Country/TerritoryUnited States
CityLos Angeles, CA


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