摘要
以聚氧化乙烯/高氯酸锂复合物(简记为(PEO)8L iC lO4)为基体,通过钛酸丁酯的水解缩合反应在其中原位生成T iO2粒子,制备了(PEO)8L iC lO4-T iO2复合聚合物电解质膜,采用原子力显微镜(AFM)、差示扫描量热法(DSC)和交流阻抗方法研究了复合电解质膜的形貌、结晶、熔融行为和离子电导率。结果表明,T iO2粒子在基体中分散均匀,加入T iO2后复合电解质体系的玻璃化转变温度和结晶度均有所下降,而电导率明显提高,当T iO2添加量为5%时电导率最大,20℃和80℃的电导率分别为5.5×10-5S/cm和1.1×10-3S/cm。
（PEO）8LiClO4-TiO2 composite polymer electrolyte films were prepared in this paper. TiO2 was formed in （PEO）8LiClO4 matrix by hydrolysis and condensation reaction of tetrabutyl titanate. The morphology, the crystallization and melting behaviour and the conductivity of composite polymer electrolyte films were studied by atom force microscopy, differential scanning calorimetry and alternating current impedance spectroscopy respectively. It shows that TiO2 particles are uniformly dispersed in （PEO）8LiClO4-5%TiO2 composite polymer electrolyte film. The glass transition temperature and the crystallinity of composite polymer electrolyte films are decreased, the ionic conductivity is enhanced , comparing with the polymer electrolyte film without TiO2. The maximum value of conductivity of composite polymer electrolyte films is obtainded at 5 %TiO2 content with 5. 5×10^-5 S/cm and 1.1×10^-3 S/cm at 20℃ and 80 ℃ respectively.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第4期142-145,共4页
Polymer Materials Science & Engineering
