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在大气氛围中 ,采用电化学沉积的方法在钽电极表面合成了导电聚吡咯膜 .实验发现 ,机械打磨促进了电极表面缺陷位置的增加 ,有利于聚吡咯膜的形成 .从对支撑电解液老化机理的探讨出发 ,讨论了溶剂组分对聚吡咯膜电气性能的影响 .由于吡咯单体的质子化作用是导致支撑电解液老化的根本原因 ,因此采用亲核性强的 1,2 丙二醇碳酸酯 (PC)和亲核性稍弱的乙腈 (AN )混合溶剂配制支撑电解液 ,既可以合成出具有较高电导率的聚吡咯膜 ,又可以适当地抑制支撑电解液的老化 .实验结果表明 ,采用有机酸和无机酸对聚吡咯膜进行处理 ,均有利于其电导率的提高
In the atmosphere, conductive polypyrrole films were synthesized on the surface of tantalum electrode by electrochemical deposition.It was found that the mechanical polishing promoted the increase of electrode surface defects, which was in favor of the formation of polypyrrole film.From the analysis of the aging of supporting electrolyte Mechanism of the solvent composition on the electrical properties of polypyrrole film.As the protonation of pyrrole monomer is the leading cause of supporting electrolyte aging, so the use of a strong nucleophilic 1,2 propanediol carbonate (PC) and slightly nucleophilic acetonitrile (AN) mixed solvent to prepare the supporting electrolyte, the polypyrrole film with higher conductivity can be synthesized and the aging of supporting electrolyte can be restrained properly.The experimental results show that, Organic acids and inorganic acids on the polypyrrole film processing, are conducive to the improvement of its conductivity