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为制备完整大面积聚吡咯(PPy)膜,采用多电位阶跃法,以水为剂,高氯酸锂、草酸为支持电质,电化学合成聚吡咯.采用循环伏安法(CV)、交流阻抗谱(EIS)研究了PPy膜电化学行为.采用扫描电子显微镜(SEM),X射线衍射(XRD)对PPy表面形貌,构进行了研究.研究果表明,多电位阶跃法聚合电位低,膜电性好且易从电极离,易完整大面积聚吡咯膜.添加有草酸高氯酸锂水液是电聚合聚吡咯较为理想支撑电质,多电位阶跃法有效克服了PPy过氧化致电率下降,合成聚吡咯膜易离,构致密,电性好.
In order to prepare complete polypyrrole (PPy) films, polypyrrole was electrochemically synthesized by a multi-potential step method with water as a catalyst, lithium perchlorate and oxalic acid as supporting materials, and cyclic voltammetry (CV) The electrochemical behavior of PPy films was investigated by electrochemical impedance spectroscopy (EIS). The morphology and structure of PPy films were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the polyelectrolyte potential Low, good electrical properties and easy from the electrode, easy to complete a large area of polypyrrole film. Adding an aqueous oxalic acid solution of lithium perchlorate polypyrrole is more ideal for supporting electrical, multi-potential step method to effectively overcome the PPy Oxidation rate decreased, the synthesis of polypyrrole film is easy to structure dense, good electrical properties.