Laboratory of Optical Probes and Bioelectrocatalysis(LOPAB), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.
ACS Appl Mater Interfaces. 2012 Oct 24;4(10):5583-9. doi: 10.1021/am301484s. Epub 2012 Oct 2.
Nanoscopic ruthenium oxide (RuO(2))/polyaniline (PANI)/carbon double-shelled hollow spheres (CS) composites, RuO(2)/PANI/CS, have been prepared via electro-polymerization of aniline and redox deposition of RuO(2) on the surface of CS. The structures and morphologies of the resulting ternary composites are characterized using scanning electron microscopy (SEM), infrared spectroscopy (IR), energy-dispersive X-ray spectroscopy (EDX). The electrochemical properties of the ternary composites as active electrode materials for electrochemical capacitors have been investigated by different electrochemical techniques including cyclic voltammetry, galvanostatic charge-discharge, and impedance spectroscopy. The results show that the specific capacitance of RuO(2)/PANI/CS composites is 531 F g(-1) at 1 mA cm(-2) in 1.0 M H(2)SO(4) electrolyte, which is higher than many other currently available ternary composites based on RuO(2)/PANI. At the same time, the composites display a good rate capability and 70% of the initial specific capacitance is retained with the charge-discharge current density up to 10 mA cm(-2).
纳米级氧化钌 (RuO(2))/聚苯胺 (PANI)/碳双壳空心球 (CS) 复合材料 RuO(2)/PANI/CS，通过苯胺的电聚合和 CS 表面的 RuO(2) 的氧化还原沉积来制备。使用扫描电子显微镜 (SEM)、红外光谱 (IR)、能谱 (EDX) 对所得三元复合材料的结构和形貌进行了表征。通过不同的电化学技术，包括循环伏安法、恒电流充放电和阻抗谱，研究了三元复合材料作为电化学电容器活性电极材料的电化学性能。结果表明，在 1.0 M H(2)SO(4)电解质中，RuO(2)/PANI/CS 复合材料在 1 mA cm(-2)时的比电容为 531 F g(-1)，高于许多其他基于 RuO(2)/PANI 的现有三元复合材料。同时，该复合材料具有良好的倍率性能，在 10 mA cm(-2)的充放电电流密度下，仍保持初始比电容的 70%。
