Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-03-01
2010-12-28
Mulcahy, Peter D. (Department: 1796)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S310000, C429S314000, C252S062200, C521S027000, C525S326200
Reexamination Certificate
active
07858215
ABSTRACT:
A method for manufacturing a solid electrolyte membrane made from an electrolyte composition that shows low methanol cross-over and exhibits high proton conductivity. The method includes applying an electrolyte composition including an organic solvent and a perfluorocyclobutane-containing polymer having a specific structure onto a substrate, and then removing the solvent. 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 of a rigid structure with aromatic rings and a three-dimensional cross-linked structure.
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Cooray Nawalage Florence
Takei Fumio
Tomoi Masao
Fujitsu Limited
Hu Henry
Mulcahy Peter D.
Westerman Hattori Daniels & Adrian LLP
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