复合聚合物电解质制备与性能  

Preparation and properties of composite electrolyte

作　　者：袁骏飞 吴斌[1] 胡芸[1] 李德湛[1] 谢凯[1] 洪晓斌[1] 

机构地区：[1]国防科学技术大学航天科学与工程学院材料科学与工程系,湖南长沙410073

出　　处：《储能科学与技术》2015年第4期417-421,共5页Energy Storage Science and Technology

摘　　要：在复合电解质的设计中,采用结构承载相和离子导电相相结合的方式来满足结构化锂离子电池对强度和电性能的综合要求。首先确定环氧树脂为结构承载相的基体以获得良好的力学性能,利用液态和固态两种不同的造孔剂在基体内构筑连通孔隙,再通过在连通孔隙中填充凝胶态电解质或吸附液态电解质的方式提高离子导通率。综合考虑结构承载相力学性能和吸液率,得出以下结论:环氧树脂/萘/DBP/Si O2质量比为20∶20∶4∶1时,制得的样品力学性能和吸液率较佳。通过对复合聚合物电解质样品的阻抗分析测试,实验所制备的样品离子电导率最高可达1.6×10–3 S/cm,满足结构化锂离子电池电性能需求。During the design process of composite polymer electrolyte, the method which combines a structure load phase and an ion conductive phase was used to meet the demand of mechanical strength and electrical properties. The first step is choosing epoxy resin as matrix to guarantee good mechanical strength, then using different pore-forming agents to build connecting pore structure. By connecting pore to fill gel electrolyte or absorb liquid electrolyte to get ionic conductivity. According to the results, when the weight rate of epoxy resin∶naphthalene∶DBP∶Si O2 was 20∶20∶4∶1, the sample shows the highest absorption ability for electrolyte and good mechanic properties. The ionic conductivity of samples is 1.6×10^-3 S/cm, which meets the demand of the application of a lithium ion battery.

关 键 词：复合聚合物电解质 制备 性能 

分 类 号：TM911[电气工程—电力电子与电力传动]