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PEO基聚合物电解质PEOx-Li(C2F5SO22N-BaTiO3

PEO based polymer electrolyte PEOx-Li(C2F5SO22N-BaTiO3

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【作者】 李奇李雅琳夏笑虹蒋永华

【Author】 LI Qi,LI Ya-lin,XIA Xiao-hong,JIANG Yong-hua(Institute of Batteries and Polymer Materials,Hunan University,Changsha,Hunan 410082,China)

【机构】 湖南大学电池与高分子材料研究所湖南大学电池与高分子材料研究所 湖南长沙410082湖南长沙410082湖南长沙410082

【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。

【Abstract】 Polyethylene oxide(PEO) based polymer electrolytes with BaTiO3 as filler and Li(C2F5SO22N 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(C2F5SO22N was estimated to be 4.1 V(vs.Li/Li+) at 80 ℃.The conductivity and interfacial 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/cm at 25 ℃.

  • 【分类号】TM911
  • 【被引频次】7
  • 【下载频次】231
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