High temperature ionic conduction mediated by ionic liquid incorporated within the metal-organic framework UiO-67(Zr)

IL@MOF (IL = ionic liquid; MOF = metal organic framework) as a new type hybrid ionic conductor has attracted research interest. Ionic liquids incorporated within MOFs not only promote the ionic conductivity of Its, but also mediate the working temperature. In our report, 1-Ethy1-3-methylimidazolium Chloride (EMIMCI) was introduced into the pores of UiO-67(Zr) MOF by taking simple strategy basing on capillary action through specific grinding and diffusing in heating process. The working temperature of EMIMCI@UiO-67 is up to 200 degrees C. And it shows high ionic conductivity (1.67 x 10(-3) S.cm(-1) at 200 degrees C). The activation energy was estimated to be 037 eV. It is noteworthy that the hybrid material can be regarded as a fast-ion conductor based on the value of high conduction and low E-a. The high-temperature and humidity-independent ion conduction as well as low activation energy make this material potentially useful for electrochemical devices. (C) 2017 Elsevier B.V. All rights reserved.