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PEO-LiClO4-Li4Ti5O12复合聚合物电解质性能研究

Research on properties of PEO-LiClO4-Li4Ti5O12 composite polymer electrolyte

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【作者】 谭斌马先果黄心蓝杨克润邓正华

【Author】 TAN Bin1,2,MA Xian-guo1,2,HUANG Xin-lan1,2,YANG Ke-run1,2,DENG Zheng-hua1,3(1.Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu Sichuan 610041,China;2.Graduate School,Chinese Academy of Sciences,Beijing 100039,China;3.Zhongke Laifang Power Science & Technology Co.,Ltd,Chengdu Sichuan 610041,China)

【机构】 中国科学院成都有机化学研究所中国科学院研究生院中科来方能源科技公司

【摘要】 选用钛酸锂(Li4Ti5O12)纳米粒子作为填料对聚环氧乙烷(PEO)基聚合物电解质进行改性。通过交流阻抗谱(EIS),X射线衍射(XRD),扫描电镜(SEM)等手段对材料进行了表征,考察了Li4Ti5O12对聚合物电解质电化学性能的影响。研究表明,Li4Ti5O12的加入减小了聚合物的结晶度,提高了聚合物电解质的电导率,增加了聚合物中得载流子数,PEO16/LiClO4/15%Li4Ti5O12体系30℃电导率达到5.31×10-5S/cm,并初步研究了以此膜为电解质的复合锂硫电池的性能。

【Abstract】 Li4Ti5O12 was used as additives to improve the performance of the PEO-based composite polymer electrolyte(CPE).The properties of electrolyte films were characterized using EIS,XRD and SEM.The effect of the Li4Ti5O12 on the performance of the CPE was discussed.It is found that crystallinity of CPE not only is decreased but also charge carriers and conductivity of CPE are improved.The conductivity of the PEO16-LiClO4-15%Li4Ti5O12 reaches up to 5.31×10-5 S/cm at 30 ℃.And simultaneously,the capability of the lithium-sulfur battery which used this film as the electrolyte was researched.

  • 【文献出处】 电源技术 ,Chinese Journal of Power Sources , 编辑部邮箱 ,2013年01期
  • 【分类号】O631.3
  • 【被引频次】8
  • 【下载频次】359
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