新型复合聚合物电解质膜的制备及性能  

Preparation and performance of novel composite polymer electrolyte membrane

作　　者：杨金鑫[1] 孙方民[2] 尹艳红[1] 岳红云[1] 杨伟光[1] 杨书廷[1] 

机构地区：[1]河南师范大学化学与环境科学学院,河南新乡453007 [2]郑州师范高等专科学校化学系,河南郑州450044

出　　处：《电池》2006年第2期98-100,共3页Battery Bimonthly

基　　金：河南省重大科技攻关资助项目(0522020300)

摘　　要：采用相转换法制备了以天然橡胶（NR）/丁苯橡胶（SBR）为基质的新型复合聚合物电解质膜.利用交流阻抗、线性扫描伏安和恒电位计时电流法对电解质膜的电化学性能进行了研究.结果表明：该电解质膜在25℃下的电导率为10^-5～10^-4S/cm,在m（NR）：m（SBR）=40：60、LiClO4和SiO2的质量分数分别为22%和21%时,电导率达到最大值1.2×10^-3S/cm,电解质膜的电化学稳定窗口和Li＋迁移数也分别达到了6.8 V和0.397.The novel composite polymer electrolyte membranes with natural rubber（ NR）/styrene-butadiene rubber（SBR） as substrate were prepared by means of phase-inversion method. The electrochemical performance of electrolyte membrane was studied by AC impedance, linear sweep voltammetry and constant voltage chronoamperometry. The results showed that the conductivity of the electrolyte membrane was 10^-5～10^-4S/cm at 25 ℃. The highest conductivity（1.2×10 ^-3S/cm） had been obtained when m （NR） ： m （SBR） = 40： 60, the mass fraction of LiClO4 was 22 % and that of SiO2 was 21%. The electrochemical stability window was 6.8 V and Li^＋ transport number was 0.397.

关 键 词：天然橡胶 丁苯橡胶 纳米SIO2 聚合物电解质膜 电化学性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]