Proton conducting solid polymer electrolytes prepared by direct

Details Proton conducting solid polymer electrolytes prepared by direct Proton conducting solid polymer electrolytes prepared by direct

1998-02-09

2000-02-15

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 30, H01M 810

Patent

active

060250852

ABSTRACT:
A method for casting solid polymer electrolyte membranes comprising proton conducting polymers stable at temperatures in excess of 100.degree. C. directly from acid solution. The invention further relates to the enhanced performance of these membranes with respect to conductivity. Particularly, the invention relates to the use of trifluoroacetic acid (TFA) as an acid solvent doped with H.sub.3 PO.sub.4 from which polybenzimiadazole (PBI) solid polymer electrolyte membranes may be cast.

REFERENCES:
patent: 5525436 (1996-06-01), Savinell et al.
patent: 5919583 (1999-07-01), Grot et al.

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