申请人:Hung Joyce
公开号:US20070100131A1
公开(公告)日:2007-05-03
Sulfonated polyethersulfones and polymer compositions comprising sulfonated polyethersulfones and at least one inorganic heteropolyacid are useful as proton exchange membranes for fuel cells. The polyethersulfones include structural units derived from at least one biphenol monomer and a monomer of formula I
wherein X is O, S or NR
1
;
Y is N or CR
5
;
R
1
, R
2
, R
3
and R
4
are independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, alkylaryl, substituted alkylaryl, arylalkyl or substituted arylalkyl, or
R
3
and R
4
, taken together, form a 5- or 6-membered substituted or unsubstituted aliphatic or aromatic ring;
R
5
is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, alkylaryl, substituted alkylaryl, arylalkyl or substituted arylalkyl; and L is a direct bond or a divalent aromatic linker containing 6-12 carbons
磺化聚醚砜和包含磺化聚醚砜和至少一种无机杂多酸的聚合物组成物可用作燃料电池的质子交换膜。聚醚砜包括从至少一种联苯单体和式I的单体导出的结构单元,其中X为O、S或NR1;Y为N或CR5;R1、R2、R3和R4独立地为氢、烷基、取代烷基、芳基、取代芳基、烷基芳基、取代烷基芳基、芳基烷基或取代芳基烷基,或R3和R4一起形成一个5-或6-成员的取代或未取代的脂肪族或芳香族环;R5为氢、烷基、取代烷基、芳基、取代芳基、烷基芳基、取代烷基芳基、芳基烷基或取代芳基烷基;L为直接键或含有6-12个碳的二价芳香链节。