Mn3CoO8复合纳米线改性PEO基全固态聚合物电解质  

Mn3CoO8 Nanowire Modified PEO-based Composite Solid State Electrolyte

作　　者：乔营 Qiao Ying

机构地区：[1]山东大学材料科学与工程学院,山东济南250061 [2]山东大学莱斯大学碳纳米材料应用研究中心,山东济南250061

出　　处：《化工设计通讯》2020年第3期89-90,共2页Chemical Engineering Design Communications

摘　　要：采用水热法和溶液浇铸法制备了复合纳米线-聚氧化乙(PEO)聚合物电解质。研究了不同纳米线的添加量对PEO基复合电解质表面形貌、离子电导率、电压窗口及循环稳定性的影响。研究表明,纳米线添加量在3%时性能最优,此复合固态电解质在60℃的离子电导率为9.1*10-5S/cm,电压窗口达到4.7V,0.5C电流下循环100圈容量为143.7mAh/g,容量保持率达到96%。In this paper,a novel Mn3CoO8 nanowires-PEO-based composed electrolyte is synthesized by hydrothermal and solution casting method.We investigate the surface morphology,ionic conductivity,voltage window and cycle performance of modified electrolyte with different nanowires fillers content.Results show that the 3 wt%nanowires-PEO solid electrolyte exhibits the highest ion conductivity(9.1*10-5S cm-1)and the widest electrochemical stability window(4.7V).Simultaneously,all-solid-state LiFePO4|Li batteries with 3 wt%nanowires-PEO solid electrolyte exhibit the highest initial specific capacity 149.2mAh g-1 at 0.5 C(60℃)and with capacity retention of 96%after 100 cycles.

关 键 词：纳米线 聚合物电解质 PEO 改性 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ086[化学工程]