富钠反钙钛矿Na_(3)SX(X=Br、I)钠离子固态电解质的制备、结构及性能研究  

The Study of Preparation, Structure and Performanceof Sodium-Rich Anti-Perovskite Na_(3)SX (X=Br, I)Sodium Ion Solid Electrolyte

作　　者：谭婧萱 闵祥飞 王晓静 马志远 周华伟[1] TAN Jingxuan;MIN Xiangfei;WANG Xiaojing;MA Zhiyuan;ZHOU Huawei(School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China)

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《聊城大学学报（自然科学版）》2023年第6期65-70,共6页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(21171084);国家大学生创新计划项目(202110447064);山东省大学生创新计划项目(S202110447066);聊城大学大学生创新计划项目(CXCY2022032,CXCY2022030,CXCY2021039,CXCY2021090)资助。

摘　　要：固态钠离子储能器件具有原材料储备丰富、低成本、安全性高、电化学窗口宽等诸多优点,有望在储能行业成为锂离子电池的最佳补充。富钠反钙钛矿固态电解质X3AB是一种有潜力的钠离子固态电解质。通过球磨-压片法制备了Na_(3)SBr和Na_(3)SI固态电解质片,用扫描电子显微镜、X射线能谱分析、X射线衍射等对固态电解质片进行了表征。实验结果表明,随着温度的增加,两种固态电解质的钠离子电导率增高。在80℃下,Na_(3)SBr固态电解质的钠离子电导率(4.16×10-6S/cm)比Na_(3)SI固态电解质的钠离子电导率(6.56×10-8S/cm)高两个数量级。该制备方法和材料可为固态钠离子电池提供一些技术和实验上的参考。Solid sodium-ion energy storage devices have many advantages of abundant raw material reserves,low cost,high safety,and wide electrochemical window,and are expected to become the best supplement for lithium-ion batteries in the energy storage field.The sodium-rich anti-perovskite solid electrolyte X 3AB is a promising sodium-ion solid electrolyte.In this study,Na_(3)SBr and Na_(3)SI solid electrolyte tablets were prepared by ball milling-pressing method,and were characterized using scanning electron microscope,X-ray energy spectrum,X-Ray Diffraction.The experimental results indicate that the sodium-ion conductivity of the two solid electrolytes increases with the increase of temperature.At 80℃,the sodium-ion conductivity of the Na_(3)SBr solid electrolyte(4.16×10-6 S/cm)is two orders of magnitude higher than that of Na_(3)SI solid electrolyte(6.56×10-8 S/cm).This preparation method and material provide some technical and experimental reference for solid-state sodium ion batteries.

关 键 词：固态电解质 富钠反钙钛矿 钠离子 离子电导率 

分 类 号：TQ136.1[化学工程—无机化工]