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Porous matrix structures for alkaline electrolyte fuel cellsA number of advancements have been realized by a continuing research program to develop higher chemically stable porous matrix structures with high bubble pressure (crossover resistance) for use as separators in potassium hydroxide electrolyte fuel cells. More uniform, higher-bubble-pressure asbestos matrices were produced by reconstituting Johns-Manville asbestos paper; Fybex potassium titanate which was found compatible with 42% KOH at 250 F for up to 3000 hr; good agreement was found between bubble pressures predicted by an analytical study and those measured with filtered structures; Teflon-bonded Fybex matrices with bubble pressures greater than 30 psi were obtained by filtering a water slurry of the mixture directly onto fuel cell electrodes; and PBI fibers have satisfactory compatibility with 42% KOH at 250 F.
Document ID
Document Type
Conference Paper
Vine, R. W.
Narsavage, S. T.
(United Technologies Corp. South Windsor, Conn., United States)
Date Acquired
August 8, 2013
Publication Date
May 1, 1975
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: Electrochemical Society, Meeting
Location: Toronto
Country: Canada
Start Date: May 11, 1975
End Date: May 16, 1975
Sponsors: Electrochemical Society
Accession Number
Funding Number(s)
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