title: A Metal-Organic Framework Impregnated with a Binary Ionic Liquid for Safe Proton Conduction above 100 °C.
abstract: To develop proton-conducting materials under low-humidity conditions and at moderate working temperature still remains challenging for fuel-cell technology. Here, a new type of proton-conducting material, EIMS-HTFSA@MIL, which was prepared by impregnating the binary ionic liquid, EIMS-HTFSA (EIMS=1-(1-ethyl-3-imidazolium)propane-3-sulfonate; HTFSA=N,N-bis(trifluoromethanesulfonyl)amide), into a mesoporous metal-organic framework, MIL-101 ([Cr3F(H2O)2O(BDC)3⋅n H2O] (n≈0.25, BDC=1,4-benzenedicarboxylate)) is reported. By taking advantage of the ionic-liquid properties, such as high thermal stability, non-volatility, non-flammability, and low corrosivity, EIMS-HTFSA@MIL shows potential application as a safe electrolyte in proton conduction above 100 °C.
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing, 100048, P.R. China.
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China.
authors.forename: Wei-Hua
authors.initials: WH
authors.lastname: Deng
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing, 100048, P.R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing, 100048, P.R. China.
authors.forename: Hong-Liang
authors.initials: HL
authors.lastname: Han
authors.affiliation: Department of Chemistry, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
authors.forename: Jared M
authors.initials: JM
authors.lastname: Taylor
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing, 100048, P.R. China.
authors.forename: Chong-Qing
authors.identifier: http://orcid.org/0000-0001-9414-5953
authors.initials: CQ
authors.lastname: Wan
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China.
authors.forename: Gang
authors.identifier: http://orcid.org/0000-0001-8562-0724
authors.initials: G
authors.lastname: Xu
keywords: ionic liquids; metal-organic frameworks; moderate temperature; proton conduction; safe electrolytes