Proton conducting polymers prepared by direct acid casting

Details Proton conducting polymers prepared by direct acid casting Proton conducting polymers prepared by direct acid casting

1996-04-01

1998-02-10

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429192, 296235, H01M 810, H01M 802

Patent

active

057167273

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: 5378550 (1995-01-01), Doddapaneni et al.
patent: 5429759 (1995-07-01), Andriem et al.
patent: 5525436 (1996-06-01), Savinell et al.

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