Fuel cell incorporating novel ion-conducting membrane

Details Fuel cell incorporating novel ion-conducting membrane Fuel cell incorporating novel ion-conducting membrane

1994-05-23

1995-11-21

Kulkosky, Peter F.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

521 25, 521 27, H01M 810, C08J 520

Patent

active

054685745

ABSTRACT:
Fuel cells incorporating a novel ion-conducting membrane are disclosed. The membrane comprises a plurality of acid-stable polymer molecules each having at least one ion-conducting component covalently bonded to at least one flexible connecting component. The membrane has ion-conducting components of the polymer molecules ordered such that a plurality of continuous ion-conducting channels penetrate the membrane from a first face to a second face and such that the ion-conducting channels are situated in an elastic matrix formed by the flexible connecting components. A preferred membrane is obtained by (1) sulfonating SEBS with sulfur trioxide under conditions that result in greater than 25 mol % sulfonation and (2) heating the polymer.

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