Electrolyte composition, solid electrolyte membrane, solid...

Details Electrolyte composition, solid electrolyte membrane, solid... Electrolyte composition, solid electrolyte membrane, solid...

2006-05-02

2006-05-02

Maples, John S. (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S310000, C429S314000, C252S062200

Reexamination Certificate

active

07037614

ABSTRACT:
An electrolyte composition that shows low methanol cross-over and exhibits high proton conductivity when used as a solid electrolyte for solid polymer fuel cells or the like, and a solid electrolyte membrane and a solid polymer fuel cell that use the electrolyte composition are provided. This electrolyte composition comprises a perfluorocyclobutane-containing polymer having a specific structure. High proton conductivity is provided by sulfonic acid groups connected to the benzene rings. Reduction of methanol crossover is realized by introduction of a rigid structure with aromatic rings, or a combination o a rigid structure with aromatic rings and a three-dimensional cross-linked structure.

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Jin et al., “Polybenzimidazoles from perfluorocyclobutyl monomers”, PMSE Preprints, 91, Journal American Chemical Society, pp. 504-505, 2004, No month.

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