title: Synthesis and electrochemical properties of substituted heteropoly acid with Dawson structure H7[In(H2O)P2W17O61]·23H2O.
abstract: A new solid high-proton conductor, substituted heteropoly acid with Dawson structure H(7)[In(H(2)O)P(2)W(17)O(61)]·23H(2)O, has been synthesized by the degradation/ion exchange/freezing method. The pH of the synthesis reaction was given. The product was characterized by chemical analysis, IR, UV, XRD and TG-DTA. The determination of conductivity shows that H(7)[In(H(2)O)P(2)W(17)O(61)]·23H(2)O is an excellent solid high-proton conductor with conductivity of 1.34 × 10(-3) S cm(-1) at 18 °C, and 70% relative humidity (RH). Its activation energy is 37.72 kJ mol(-1), which suggests that its mechanism of proton conduction is the Vehicle mechanism.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
authors.forename: Xueyu
authors.initials: X
authors.lastname: Qian
authors.forename: Xia
authors.initials: X
authors.lastname: Tong
authors.forename: Qingyin
authors.initials: Q
authors.lastname: Wu
authors.forename: Zhiqi
authors.initials: Z
authors.lastname: He
authors.forename: Fahe
authors.initials: F
authors.lastname: Cao
authors.forename: Wenfu
authors.initials: W
authors.lastname: Yan