摘要
研究了交替马来酸酐共聚物多缩乙二醇酯（ＢＭ３５０）－ＬｉＢＦ４络合物的离子传导性能．实验表明：络合物的侧链玻璃化转变温度随盐含量的增加而上升电导率随盐浓度的变比而出现一极大值室温电导率最大可达４１９×１０－５Ｓ·ｃｍ－１．电导率随温度升高而增加．络合物的导电行为符合ＶＴＦ方程．无定形相中分子链热运动是离子传输的动力。
n this paper, a study of the BM350(n=7)-LiBF4 complexes is presented. A series of AC impedance measurements in the frequency range 10kHz-10MHz and in the temperature range 25- 100℃ is reported.These solid polymer electrolyte films showed ionic conductivities of the order of 10-5S. cm-1 at room temperature. The ionic conductivity of these complexes was studied as a function of temperature and salt concentration. At high salt concentrations, the more pronounced fall in conductivity in the solid medium has been interpreted due to effect of T8 and bulk viscosity on ion transport. Conductivities which displayed non-Arrhenius behaviour were analysed by using the Vogel-Tammann-Fulcher equation and interpreted on the basis of the configurational entropy model derived by Gibbs and coworkers.
出处
《材料研究学报》
EI
CAS
CSCD
1995年第2期183-185,共3页
Chinese Journal of Materials Research
基金
国家自然科学基金
关键词
固体电解质
离子电导率
离子传输
马来酸酐
solid polymer electrolytes, ionic conductivity,glass transition temperature, ion transport, VTF equation
