烧结温度对LATP复合固态电解质微观结构及电池性能的影响OA
Impact of sintering temperature on the microstructure and performance of LATP composite solid-state electrolytes
Li1+xAlxTi2-x(PO4)3(LATP)作为一种高性能无机固态电解质,其合成温度深刻影响材料结构及性能.本实验探究了温度调控对磷酸铝钛锂(LATP)复合固态电解质微观结构及电池性能的影响,通过组装LiFePO4复合电解质Li固态电池,评估其倍率、充放电与循环性能.实验结果表明,850℃合成的LATP电解质综合性能最优,在 0.1 C倍率下循环 60周,库伦效率仍保持在99.26%.主要原因在于 850℃条件下合成的LATP结晶度最高、杂相最少、颗粒尺寸均匀、离子电导率高达2.21×10-4 S·cm-1,且电化学稳定窗口高达 4.5 V(vs.Li+/Li).本研究结果系统揭示了LATP合成温度与复合固态电解质宏观性能之间的构效关系,为高性能复合固态电解质的可控制备提供了实验与理论依据.
As a high-performance inorganic solid-state electrolyte,the synthesis temperature of Li1+xAlxTi2-x(PO4)3(LATP)profoundly affects the structure and performance of the material.This study explores the influence of temperature regulation on the microstructure and battery performance of LATP composite solid-state electrolytes.By assembling LiFePO₄composite electrolyte Li solid-state batteries,their rate performance,charge-discharge performance,and cycle performance are evaluated.The results show that the LATP electrolytes synthesized at 850 ℃ exhibit the optimal comprehensive performance:after 60 cycles at a 0.1C rate,the Coulombic efficiency remains at 99.26%.The main reasons are as follows:the LATP synthesized at 850℃has the highest crystallinity,the least impurity phases,uniform particle size,an ionic conductivity as high as 2.21×10-4 S·cm-1,and an electrochemical stability window of up to 4.5 V(vs.Li+/Li).This study systematically reveals the structure-activity relationship between the LATP synthesis temperature and the macroscopic performance of the composite electrolyte,providing experimental and theoretical bases for the controllable preparation of high-performance composite solid-state electrolytes.
陈旅阳;白国梁;魏旭晖;王春花;王佳杰;刘瑞恒;马倩婧
安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011安徽省先进催化与能源材料重点实验室,安徽,安庆 246011||安庆师范大学化学化工学院,安徽,安庆 246011
信息技术与安全科学
LATP合成温度复合固态电解质离子电导率固态电池
LATPsynthesis temperaturecomposite solid electrolyteionic conductivitysolid-state
《井冈山大学学报（自然科学版）》 2026 (2)
31-38,8
国家自然科学基金青年科学基金项目(22402001)安徽省高校自然科学研究重大项目(2023AH040072)
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