Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Polymer electrolyte membrane and process for preparation thereof, and membrane-electrode assembly and polymer electrolyte fuel cell
A polymer electrolyte membrane comprising as a main ingredient a block copolymer (P) which comprises, as its constituents, a vinyl alcoholic polymer block (A) and a polymer block (B) having ion-conducting groups, which block copolymer (P) is cross-linking treated, and a membrane-electrode assembly and a fuel cell using the polymer electrolyte membrane, respectively. Preferred as polymer block (B) is one having a styrene or vinylnaphthalene skeleton or a 2-(meth)acrylamido-2-methylpropane skeleton. The ion-conducting group includes a sulfonic acid group, a phosphonic acid group or the like.
Kuraray Co., Ltd.
H C C H C H C H C C Y Y H C C
H01M C08F C08F H01M C08J H01M C08F H01B C08F C08J Y02E Y02P H01M C08J C08J
inventional inventional additional inventional additional additional inventional inventional additional additional additional additional inventional additional inventional
Shinji Naoki Tomohiro Takeshi Takeshi Hiroyuki
Nakai Fujiwara Ono Nakano Kusudou Ohgi