The Preparation and Properties of Phosphazene Polymer Electrolyte for Lithium Ion Battery

doi:10.3696/j.issn.1006-396X.2010.01.001

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (1): 1-5.DOI: 10.3696/j.issn.1006-396X.2010.01.001

1. Department of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617,P.R.China;

2.College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R.China;

3. Guangdong Rongtai Industry Co., Ltd., Jieyang Guangdong 522000,P.R.China

Received:2009-09-21 Revised:2009-11-10 Published:2010-03-25 Online:2010-03-25

锂离子电池用磷腈类聚合物电解质的制备与性能

杨明山,刘建伟,于今,张旭,魏进,李林楷

1.北京石油化工学院材料科学与工程系，北京102617；
2.北京化工大学材料科学与工程学院，北京100029；

3.广东榕泰实业股份有限公司，广东揭阳522000

作者简介:杨明山(1963 -), 男, 北京市, 博士, 教授
基金资助:
广东省教育部产学研结合项目资助(2007A-090302051);北京市教育委员会科研基地建设项目资助(2009);北京市大学生研究训练项目(URT)资助(08011082003);北京石油化工学院学术创新团队资助

Abstract

Abstract:

Polydichlorophosphazene was synthesized from hexachlorocyclotriphosphazene by high-temperature decyclopolymerization, and poly(2-(2-methoxyethoxy)ethanol phosphazene)(MEEP) was synthesized by alcohol-Na⁺ reaction. The optimal synthesis parameters were obtained, and the structure of MEEP was analyzed by FT-IR, 31P -NMR, 13C-NMR and 1H-NMR. The results show that the product synthesized is MEEP compound. Then polyphosphazene electrolyte was prepared by mixing MEEP with LiCF₃SO₃ and its heat stability and ionic conductivity were determined. The results indicate that the electrolyte prepared has high thermo-decomposed temperature, its initial decomposing temperature is more than 200 ℃ and its room-temperature conductivity is up to 1.187×10^-4S/cm(25 ℃).

Key words: Polydichlorophosphazene , Poly（２－（２－ methoxyethoxy）ethanol phosphazene）（MEEP） , Polymer electrolyte for lithium ion battery

摘要： 采用六氯环三磷腈高温开环聚合方法制备了聚二氯磷腈,然后采用醇钠法,取代聚二氯磷腈的氯,制备了聚二(二乙二醇单甲醚)磷腈(MEEP),探索出了较佳的合成工艺,采用 FT-IR、31P-NMR、13C-NMR、质谱对其进行了结构表征和分析。结果表明,所制备的磷腈聚合物确实为 MEEP。采用自制的 MEEP,与三氟甲基磺酸锂(LiCF3SO3)盐进行复配,制备了锂离子电池用聚合物固体电解质,对其热稳定性、导电性进行了测试,其开始分解温度在200℃以上,室温电导率达到了1 .187×10-4 S/cm(25℃),具有较佳的导电性和热稳定性,可用于锂离子电池的电解质。

关键词: 聚二氯磷腈 , 聚二（二乙二醇单甲醚）磷腈 , 锂离子电池电解质

YANG Ming-shan, LIU Jian-wei, YU Jin,et al. The Preparation and Properties of Phosphazene Polymer Electrolyte for Lithium Ion Battery[J]. Journal of Petrochemical Universities, 2010, 23(1): 1-5.

杨明山,刘建伟,于今. 锂离子电池用磷腈类聚合物电解质的制备与性能[J]. 石油化工高等学校学报, 2010, 23(1): 1-5.