Room-temperature ionic conductivity of Ba,Y,Al co-doped Li_(7)La_(3)Zr_(2)O_(12)solid electrolyte after sintering

作     者：Xiao-Zhen Liu Lei Ding Yu-Ze Liu Li-Ping Xiong Jie Chen Xiao-Long Luo Xiao-Zhen Liu;Lei Ding;Yu-Ze Liu;Li-Ping Xiong;Jie Chen;Xiao-Long Luo

作者机构：School of Chemical and Environmental EngineeringShanghai Institute of TechnologyShanghai201418China College of Economic and ManagementBeijing Forestry UniversityBeijing100083China Regenia ABStockholm10691Sweden 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第8期

页      面：2301-2306页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51572176 and 51372153) the Plateau Discipline Construction Program from Shanghai Municipal Education Commission(No.0817) the Collaborative Innovation Fund of Shanghai Institute of Technology(No.XTCX2017-5) 

主　　题：Solid electrolyte Ionic conductivity Sintering Li_(7)La_(3)Zr_(2)O_(12) Garnet 

摘      要：The Ba,Y and A1 co-doped Li_(7)La_(3)Zr_(2)O_(12)(LLZO)was prepared by the solid-state reaction *** of sintering on the crystallographic structure,morphology,total conductivity,relative density and contractibility rate of the prepared solid electrolyte was studied,*** sintered samples were characterized by X-ray diffractometer(XRD),scanning electron microscopy(SEM),electrochemical impedance spectra(EIS)and inductively coupled plasma atomic emission spectrometry(ICP-AES)techniques,*** cubic garnet phase Ba,Y and Al co-doped LLZO is obtained,and the room-temperature total conductivity of the Ba,Y and Al co-doped LLZO solid electrolyte is improved significantly by eliminating the grain boundary resistances and improving the densifications with controlling sintering temperature(T)and time(t),*** at 1160-1190℃for 12 h and at 1190℃for6-15 h,respectively,the Ba,Y and Al co-doped LLZO solid electrolytes are cubic garnet *** at1180-1190℃for 12 h and at 1190℃for 12-18 h,respectively,SEM images of the cross section of the Ba,Y and Al co-doped LLZO solid electrolytes exhibit the distinctively flattened morphology without any noticeable grain *** total conductivity,relative density and contractibility rate of Li_(6.52)La_(2.98)-Ba_(0.02)Zr_(1.9)Y_(0.1)Al_(0.2)O_(12)solid electrolyte are 2.96×10^(-4) S·cm^(-1),94.19%and 18.61%,respectively.