Effect of sintering temperature and holding time on structure and properties of Li_(1.5)Ga_(0.5)Ti_(1.5)(PO_4)_(3)electrolyte with fast ionic conductivity

作     者：Yin-yi LUO Hao-zhang LIANG Ping ZHANG Lei HAN Qian ZHANG Li-dan LIU Zhi-wei LUO Tian-xiang NING An-xian LU 罗银易;梁皓璋;张平;韩磊;张骞;刘李丹;罗志伟;宁天翔;卢安贤

作者机构：School of Materials Science and EngineeringCentral South UniversityChangsha 410083China School of Materials Science and EngineeringJiangxi University of Science and TechnologyGanzhou 341000China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2024年第34卷第9期

页      面：2959-2971页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：funded by the National Natural Science Foundation of China(Nos.51672310 51272288 51972344) 

主　　题：sintering temperature holding time conductivity cracks solid-state electrolyte 

摘      要：Li1.5Ga0.5Ti1.5(PO4)3(LGTP)is recognized as a promising solid electrolyte material for lithium *** this work,LGTP solid electrolyte materials were prepared under different process conditions to explore the effects of sintering temperature and holding time on relative density,phase composition,microstructure,bulk conductivity,and total *** the impedance test under frequency of 1-10~6 Hz,the bulk conductivity of the samples increased with increasing sintering temperature,and the total conductivity first increased and then *** results showed that the average grain size in the ceramics was controlled by the sintering temperature,which increased from(0.54±0.01)μm to(1.21±0.01)μm when the temperature changed from 750 to 950°*** relative density of the ceramics increased and then decreased with increasing temperature as the porosity *** holding time had little effect on the grain size growth or sample density,but an extended holding time resulted in crack generation that served to reduce the conductivity of the solid electrolyte.