PEO基聚合物电解质PEO_x-Li(C_2F_5SO_2)_2N-BaTiO_3  

PEO based polymer electrolyte PEO_x-Li(C_2F_5SO_2)_2N-BaTiO_3

作　　者：李奇[1] 李雅琳[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：《电池》2005年第5期348-350,共3页Battery Bimonthly

摘　　要：研究了以聚环氧乙烷(PEO)为基体,BaTiO3为填充剂,Li(C2F5SO2)2N作为锂盐的聚合物锂离子电池电解质。利用循环伏安法测定了铝的溶解电位,80℃时,铝集流体在PEOx-Li(C2F5SO2)2N体系中溶解电位可达4.1 V(vs.Li/Li+)。采用交流阻抗技术测试了其电导率和界面电阻,当x=8时,体系的电导率最大,80℃时为1.65×10-3S/cm,25℃时为1.5×10-5S/cm。Polyethylene oxide （PEO） based polymer electrolytes with BaTiOs as filler and Li（C2F5SO2）2N as lithium salt were examined in polymer Li-ion batteries. The aluminum dissolution potential was tested by cyclic voltammetry. The aluminum dissolution potential in PEOx-Li（C2F5SO2）2N was estimated to be 4.1 V（ vs. Li/Li^＋ ） at 80 ℃. The conductivity and interfaeial resistance were tested by alternating current impedance techniques. The highest conductivity was observed when x = 8,it was 1.65 × 10^-3 S/cm at 80 ℃ and 1.5 × 10^-5 S/em at 25 ℃.

关 键 词：聚合物电解质 PEOx-Li(C2F5SO2)2N-BaTiO3 电导率 界面电阻 

分 类 号：TM911[电气工程—电力电子与电力传动]