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Electrochemical self-assembly of nano-polyaniline film by forced convection and its capacitive performance

机译：强制对流法制备纳米聚苯胺薄膜的电化学自组装及其电容性能

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摘要

At present, an in situ synthesis of a conductive polyaniline (PANI) film via self-assembly is particularly of great interest in the supercapacitor field. Herein, we report the discovery a nanostructuring process for PANI electrochemical self-assembly through a forced convection method. It was observed that the morphology and structure of PANI films at the nanometer scale could be controlled by varying the rotation speed of the disk electrode during the electropolymerization process. On increasing the rotation speed from 0 rpm to 1000 rpm, the growth of PANI films successively changes from the nanorods composed porous films to the nanoparticles (diameter of 50 nm) composed dense films. We have also demonstrated the efficient electrochemical properties of the electrochemically assembled nano-PANI film-based electrodes at a rotation speed of 100 rpm, which showed the highest capacitance of 700.50 F g?1 at a current density of 1 A g?1 and good cycle stability after 1000 cycles.
机译：目前，通过自组装的导电聚苯胺（PANI）薄膜的原位合成在超级电容器领域中特别受到关注。在这里，我们报告发现通过强制对流方法的PANI电化学自组装的纳米结构化过程。观察到，在电聚合过程中，可以通过改变盘状电极的旋转速度来控制PANI膜的纳米级形态和结构。随着旋转速度从0 rpm增加到1000 rpm，PANI膜的生长依次从纳米棒组成的多孔膜变为纳米颗粒（直径为50 nm）的致密膜。我们还证明了电化学组装的纳米PANI膜基电极在100 rpm的转速下的高效电化学性能，其最高电容为700.50 F g ？1 ，电流密度为1 A g ？1 ，在1000次循环后具有良好的循环稳定性。

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