Preparation of hybrid perovskite-type Li_(0.33)La_(0.56)TiO_(3)by adding ionic liquids

作     者：Xiaojuan Lu Xinyu Li Mingyang Duan Jiankang Hai Songtao Liu Xiaojuan Lu;Xinyu Li;Mingyang Duan;Jiankang Hai;Songtao Liu

作者机构：Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants ControlDepartment of Environmental Science and EngineeringNorth China Electric Power UniversityBaoding 071003China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2023年第41卷第5期

页      面：758-763,I0005页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the Natural Science Foundation of Hebei Province(E2021502013) Key Research and Development Projects of Hebei Province(21373805D)。 

主　　题：lonic liquid lonic conductivity Lithium-ion conductor Hybrid Lanthanum Rare earths 

摘      要：Perovs kite-type Li_(0.33)La_(0.56)TiO_(3)(LLTO)shows greate r advantages than organic liquid electrolytes to be used in all-so lid-state lithium-ion batteries with high energy densities.Ionic liquid[BMIM][BF4]was used to improve the properties of Li_(0.33)La_(0.56)TiO_(3)by attrition milling in this study.The microstructure,crystallinity and lithium-ion conductivity of the samples were measured by scanning electron microscopy(SEM),X-ray diffraction(XRD),and impedance spectroscopy(IS).The total ionic conductivities of the samples LLTO+x wt%[BMIM][BF4]increase upon adding[BMIM][BF4]and the maximum conductivity reaches4.71×10^(-4)S/cm when x=12.5 wt%.The enhancement of the total conductivity is ascribed to the bridging role of the ionic liquid among grains,as evidenced by the low activation energy of 0.17-0.25 eV and the SEM observation.The Li+transference numbers of the hybrid samples are all lower than that of the pure LLTO,indicating the existence of electronic conductions.The hybrid mate rial with a mixed conductivity and good stability in the atmosphere can find uses in all-solid-state lithium-ion batteries to improve the interface contact between electrolytes and electrodes.