本文采用电化学循环伏安法制备得到聚对苯撑(PPP)导电膜,通过FTIR、XPS、四探针、交流阻抗(EIS)等手段对其结构及电性能进行表征,并考察了电化学条件与聚对苯撑膜的电化学性能之间的关系.研究表明,合成的PPP膜的平均聚合度为10.8,电导率在2.0～5.0S/cm范围内.于0.6V恒电位10min后,PPP膜的掺杂量可达25％.在0～1.0V电位范围内,PPP膜具有良好的电化学氧化还原性.交流阻抗的进一步研究表明,随着外加电位的正移,聚对苯撑膜的掺杂程度提高,膜的Rct由0V的329.7Ωcm2降低至0.6V的15.60Ωcm2,Cdl由0V的1.164μFcm-2增至0,6V的172.7μF cm-2.膜反应电阻和双电层电容的变化表明PPP膜在掺杂过程中形成开放结构,便于溶液中的离子与溶剂交换.
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