초록 ▼

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 unsaturati

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.

대표청구항

[ We claim:] [1.] A water-insoluble proton-conducting statistical copolymer comprising structural units of formula (I), (II), (III) and (IV) [ STR 2 ] wherein m, n, p and q are integers from 250-10,000 and q is from 20% to 80% of the quantity (p+q).

[ We claim:] [1.] A water-insoluble proton-conducting statistical copolymer comprising structural units of formula (I), (II), (III) and (IV) [ STR 2 ] wherein m, n, p and q are integers from 250-10,000 and q is from 20% to 80% of the quantity (p+q).