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采用慢速循环伏安法研究了化学合成聚苯胺粉末的电化学行为.扫描电位周期为+0.6→-0.2→+0.8→+0.6V(vs.SCE).化学合成聚苯胺与电化学合成聚苯胺的循环伏安曲线很相似.不同酸中循环伏安曲线的差别是由阴离子的掺杂引起的.第一个氧化还原峰随着pH的增大向正电位方向移动,与质子的参加和消除有关.酸浓度很低或很高时制备的聚苯胺是电化学不活性的.
The electrochemical behavior of polyaniline powder synthesized by slow cyclic voltammetry was investigated by scanning electron microscopy (SEM). The scan potential period was + 0.6 → -0.2 → + 0.8 → + 0.6V (vs.SCE). The chemical synthesis of polyaniline and electrochemical synthesis of poly The cyclic voltammetry curves for aniline are very similar. The differences in the cyclic voltammetry curves for different acids are caused by the doping of anions. The first redox peak shifts toward the positive potential with increasing pH, The polyaniline prepared when the acid concentration is very low or very high is electrochemically inactive.