Acid doped polybenzimidazoles, a new polymer electrolyte

Book · Fri Dec 30 23:00:00 EST 1994

OSTI ID:33600

Wainright, J S; Wang, J T; Savinell, R F; Litt, M; Moaddel, H; Rogers, C ^[1]

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1. Case Western Reserve Univ., Cleveland, OH (United States)

Polybenzimidazole films doped with phosphoric acid are being investigated as potential polymer electrolytes for use in hydrogen/air and direct methanol fuel cells. The advantages of this electrolyte include good mechanical properties, and low vapor permeability. Combined, these factors allow for the use of thin (< 0.005 cm) membranes in fuel cells without excessive adverse effects from fuel gas crossover to the cathode compartment and subsequent cathode depolarization. In this paper the authors discuss experimental data on the proton conductivity, thermal stability and gas permeability of this material.

• OSTI ID: 33600
• Report Number(s): CONF-940529--; ISBN 1-56677-080-7
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
ALCOHOL FUEL CELLS
BENZIMIDAZOLES
DOPED MATERIALS
EXPERIMENTAL DATA
HYDROGEN FUEL CELLS
IONIC CONDUCTIVITY
MECHANICAL PROPERTIES
MEMBRANES
ORGANIC POLYMERS
SOLID ELECTROLYTE FUEL CELLS
SOLID ELECTROLYTES
THERMAL STRESSES
THERMODYNAMIC PROPERTIES