Ion-conducting membrane for fuel cell

Details Ion-conducting membrane for fuel cell Ion-conducting membrane for fuel cell

1998-01-30

2000-08-29

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 30, 429309, 429314, 429189, 252 622, 264 83, H01M 810, H01M 618, H01M 1008

Patent

active

06110616&

ABSTRACT:
Ion-conducting membranes for fuel cells are disclosed. The membrane is composed of a hydrogenated and sulfonated statistical copolymer of styrene and butadiene. A preferred membrane is obtained by hydrogenating a copolymer of styrene and butadiene to obtain less than five percent residual unsaturation, then sulfonating the polymer with an acetyl sulfate sulfonation agent to a level of at least 30 mol % percent sulfonate.

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