title: Poly(sulfonated phenylene)-block-Polyimide Copolymers for Fuel Cell Applications.
abstract: Novel poly(2-(3-sulfo)benzoyl-1,4-phenylene)-block-polynaphthalimide (PSP-b-PI) copolymers were successfully synthesized by Ni(0)-catalyzed copolymerization of 2,5-dichloro-3'-sulfo-benzophenone and dichloro-terminated naphthalimide oligomer. The membranes exhibited a microphase-separated structure and good hydrolytic stability at 130 °C. They showed a fairly strong anisotropy of membrane swelling with much smaller in-plane swelling, but a rather weak anisotropy of proton conductivity. The membranes had a fairly high through-plane conductivity in water and even under low relative humidity. The PSP-b-PI copolymer with an IEC of 1.5 meq · g(-1) showed high PEFC performance due to the high through-plane conductivity.
authors.affiliation: School of Chemical Engineering, Nanjing University of Science & Technology, 200 Xiao Ling Wei, Nanjing 210094, China; Graduate School of Science and Engineering, Yamaguchi University, Tokiwadai 2-16-1, Ube, Yamaguchi 755-8611, Japan.
authors.forename: Huiping
authors.initials: H
authors.lastname: Bi
authors.forename: Shouwen
authors.initials: S
authors.lastname: Chen
authors.forename: Xinbing
authors.initials: X
authors.lastname: Chen
authors.forename: Kangcheng
authors.initials: K
authors.lastname: Chen
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Endo
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Higa
authors.forename: Kenichi
authors.initials: K
authors.lastname: Okamoto
authors.forename: Lianjun
authors.initials: L
authors.lastname: Wang