中文摘要：

由于导电聚苯胺（PANI）的制备简单、性能稳定，具有广泛的应用前景而备受人们的关注，有关基底材料对电化学合成PANI的影响却少见报道，Rajendra Prasad等研究发现，用循环伏安法在不同基底材料表面制备的PANI的电化学活性有明显不同．

英文摘要：

Effects of substrate materials on the properties of nanofibrous polyaniline （PANI） film prepared by the pulse galvanostatic method（PGM） were investigated. The chronopotentiograms of aniline polymerization in 0. 3 mol/L aniline ＋ 1 mol/L HNO3 aqueous solution showed that the anodic potential on Pt and Ru electrodes rised to 880 and 850 mV quickly when the mean current density was 1.0 mA/cm^2. The potential turned to 750 mV after about 40 s and kept constant until the experiment was over. When the aniline polymerization occurred on stainless steel（SS） and AI electrodes, the anodic potential climbed to 1 100 and 1 700 mV respectively, and after about 55 and 250 s it turned to 750 mV. The scanning electron microscopic images demonstrated that the PANI films on Pt, Ru, SS and A1 prepared by PGM all exhibited a similar fibrous morphology with a diameter of 80--100 nm. Therefore, it can be considered that the PGM polymerization of aniline on different substrate materials was markedly distinct when the surface of electrode was not covered by PANI completely. The cyclic vohammograms and electrochemical impedance spectroscopy results showed that PANI films on various substrates presented different electrochemical reactivities in an aqueous aniline free solution of 1 mol/L HNO3.