Proton conducting polymer electrolyte prepared by direct acid ca

Details Proton conducting polymer electrolyte prepared by direct acid ca Proton conducting polymer electrolyte prepared by direct acid ca

2000-01-03

2000-08-08

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429 33, 429307, H01M 810

Patent

active

060999888

ABSTRACT:
An acid solution 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.

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