摘要
通过对成膜过程的控制，可形成不同形貌的聚甲基丙烯酸甲酯（PMMA）／聚偏氟乙烯（PVDF）凝胶聚合物膜。通过共混成膜的方法，得到无孔共混膜；通过先成膜再交联的方法，得到稀孔交联膜；通过先交联再成膜的方法，得到多孔交联膜。它们的离子电导率顺序为：多孔交联膜〉无孔共混膜〉稀孔交联膜。采用多孔交联膜的原理型电池以0．2C在3．0～4．3v充放电，第50次循环时的容量保持率大于92％。
Poly （methyl methacrylate） （PM MA）/poly （vinylidene fluoride） （PVDF） gel polymer membranes with different morphology were formed by controlling the membrane formation processes. The nonporous blending membrane was obtained by blending and coating, the less-porous cross-linking membrane was obtained by cross-linking after coating, the porous cross-linking membrane was obtained by cross-linking before coating. The order of their ionic conductivity was the porous cross-linking membrane 〉 the nonporous cross-linking membrane 〉 the less-porous cross-linking membrane. The capacity retention rate of the principle cell using the porous cross-hnking membrane at the 50th cycle was higher than 92% when charge-discharged at 0.2 C in 3.0 - 4.3 V.
出处
《电池》
CAS
CSCD
北大核心
2009年第6期346-348,共3页
Battery Bimonthly
基金
国家自然科学基金资助项目(20973060)
上海市浦江人才计划资助项目(09PJ1403400)
