title: Highly proton conductive polyimide electrolytes containing fluorenyl groups.
abstract: Novel sulfonated polyimides containing fluorenyl groups show good thermal and oxidative stability as well as a high proton conductivity of 1.67 S cm(-1) at 120 degrees C and 100% RH.
authors.affiliation: Clean Energy Research Center, University of Yamanashi, 4 Takeda, Kofu 400-8510, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Miyatake
authors.forename: Hua
authors.initials: H
authors.lastname: Zhou
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Uchida
authors.forename: Masahiro
authors.initials: M
authors.lastname: Watanabe