摘要
通过将氯封端的聚氧化乙烯(PEO-Cl_2)、双酚A(BPA)和4,4′-二氯二苯砜(DCDPS)进行缩合聚合反应,制备了PEO含量不同的聚醚砜-聚氧化乙烯的无规共聚物和序列共聚物。将所合成的序列(无规)共聚物添加双三氟甲磺酰亚胺锂(LiTFSI)后与多孔聚四氟乙烯基膜(ePTFE)进行复合,制备了一系列具有较高力学强度的复合膜,研究了锂盐掺杂量和PEO含量等因素对锂离子电导率的影响规律。结果表明:在未添加增塑剂和电解质溶剂的情况下,这些复合膜仍然具有较高的电导率。
A series of poly（ether sulfone）-poly（ethylene oxide）random and sequence copolymers with varied PEO content have been synthesized via condensation copolymerization of 4,4′-dichlorodiphenyl sulfone（DCDPS）,chlorine-terminated poly（ethylene oxide）（PEO-Cl2）and bisphenol A（BPA）.The composite membranes with good mechanical strength were prepared by impregnating polytetrafluoroethylene porous membrane（ePTFE）with the copolymer solutions containing bistrifluoromethanesulfonimide lithium salt（LiTFSI）.The effects of LiTFSI loading level and PEO content on lithium ionic conductivity were investigated.It was found that in the absence of any plasticizer or solvent the composite membranes showed reasonably high lithium ionic conductivity.
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第4期90-93,共4页
New Chemical Materials
基金
上海市自然科学基金项目(12JC1400102)
青浦区-上海交通大学区校合作项目(12H/00000380)
关键词
全固态电解质膜
聚醚砜-聚氧化乙烯
聚四氟乙烯
复合膜
电导率
solid polymer electrolyte
polysulfone-poly（ethylene oxide）copolymer
PTFE
composite membrane
lithium ion conductivity
