论文部分内容阅读
制备了PEO LiClO4 Al2 O3及PEO LiClO4 碳酸乙烯酯 (EC)两种聚环氧乙烷(PEO)复合聚合物电解质 (SPE)薄膜 ,用不锈钢及铂两种惰性电极研究了聚合物电解质的交流阻抗特性 ,并对SPE/惰性电极的界面特性进行了研究 .提出了一种具有普适性的等效电路 ,发现电导率的测定与采用的惰性电极有关 .而且交流阻抗谱图与所加交流扰动幅度无关 ,但与直流极化电势有关 .EC含量的增加对低频直线的斜率也有影响 .
PEO LiClO4 Al2 O3 and PEO LiClO4 two kinds of polyethylene oxide (PEO) composite polymer electrolyte (SPE) thin films were prepared. The electrochemical impedance spectroscopy Characteristics and the interface characteristics of SPE / inertial electrode were studied.A universal equivalent circuit was proposed and it was found that the determination of conductivity was related to the use of an inert electrode.And the AC impedance spectra and the AC disturbances Amplitude has nothing to do with it, but it is related to DC polarization potential. The increase in EC content also has an effect on the slope of the low frequency line.