超级电容器准固态聚合物电解质膜的研究

制备了一种介于水凝胶和全固态聚合物电解质之间的聚合物电解质膜,用于活性炭电子双电层电容器。测试表明使用该聚合物电解质膜的双电层电容器的容量为2 15mA·h,其容量、功率特性与KOH水溶液电容器相当。电容器的循环伏安曲线,稳定的充放电循环曲线及交流阻抗谱说明该种聚合物电解质膜在碳基超级电容器的使用电压范围(0～1V)内是稳定的,而且聚合物电解质膜电容器表现出良好的可逆性和循环特性。

Research on pseudo-solid polymer electrolyte membrane for supercapacitor

A novel pseudo-solid polymer electrolyte membrane(PSPEM) has been prepared for activated carbon electric double-layer capacitor.The membrane was characterized as a combination of polymer hydrogel and solid polymer electrolyte.The capacitor with pseudo-solid polymer electrolyte exhibited almost the same capacitance and power characteristics as that with KOH aqueous electrolyte.The cyclic voltammetry,charge-discharge cycle tests and impedance spectroscopic measurement suggested that the electrolyte membrane is stable under this charge-discharge voltage condition,and the capacitor with the pseudo-solid polymer electrolyte membrane showed a better reversibility and cycle ability.