SiO_2对金属锂盐聚合物电解质导电作用的影响  

THE EFFECT OF SiO_2 PARTICLES ON THE ION-CONDUCTIVITY OF LITHIUM SALT POLYMER ELECTROLYTES BASED

作　　者：李奇[1] 熊英[1] 夏笑虹[1] 蒋永华[1] 

机构地区：[1]湖南大学电池与高分子材料研究所,湖南长沙410082

出　　处：《湖南冶金》2005年第3期7-11,共5页Hunan Metallurgy

基　　金：湖南大学2004年度自然科学基金重点项目资助。

摘　　要：采用溶液浇注法制备了PEO基聚合物电解质,测定了该类电解质的电导率,并研究了温度、SiO2的颗粒度及表面性能对聚环氧乙烯/高氯酸锂(PEO/LiClO4)聚合物电解质体系电导率的影响。结果表明:PEO—LiClO4—10%SiO2复合型聚合物电解质的室温电导率达到了1.033×10-4S/cm,同时对该电解质进行了差热分析,发现加入SiO2后,PEO/LiClO4体系熔融温度降低,非晶相含量增加,有利于提高离子电导率。PEO-based polymer electrolytes were prepared successfully by casting. The influences of temperature, particle size of SiO2 and its surface property upon the conductivity of PEO/LiClO4 system were investigated. The results show that, the conductivity of PEO-LiClO4-10%SiO2 composite polymer electrolytes at room temperature reached to 1.033×10-4 S/cm. With the aid of DSC, it was found that the melting temperature of PEO/LiCiO4 decreased, and the ionic conductivity increased.

关 键 词：聚合物电解质 PEO 有机-无机复合型聚合物电解质 

分 类 号：TF826.3[冶金工程—有色金属冶金]