摘要
选用LiBOB作为掺杂盐,聚氧化乙烯(PEO)为主体,采用溶液浇铸法制备出不同组成的聚合物电解质膜,运用差热分析、电化学阻抗谱和计时电流进行测试.结果表明:LiBOB.(PEO)n聚合物电解质具有较好的导电性能,锂盐的浓度对体系的结晶度和导电性能有很大的影响.随着锂盐LiBOB浓度的增加,电导率呈现先上升后下降的趋势.当n(O)∶n(Li)=16∶1时,LiBOB.(PEO)n聚合物电解质室温下的电导率达到最高,为5.8μS/cm,锂离子迁移数为0.39.
Composite polymer electrolytes have been prepared by casting lithium bis（oxalato）borate （LiBOB） salt and polyethyleme oxide（PEO） blendings, The conductivities of polymer electrolytes are analysized by DSC, EIS, and Steady-state current. The results show that LiBOB＋ （PEO）n polymer electrolytes have a higher ionic conductivity, the crystallization and conductivity are effected by the concentration of Lithium salt LiBOB. With the increase of the salt＇s concentration, the conductivity of polymer electrolytes increases first, then discreases. At the room temperature, when the molecule ratio of n （O） ： n （Li） = 16 ：1, the maximun conductivity is 5.8μS/cm and the ionic transference number of Li ＇ is 0.39.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2006年第6期678-681,720,共5页
Journal of Hebei Normal University：Natural Science
基金
国家留学归国科研启动基金资助(2004527)
