物理化学学报Issue(2)：493-502,10.DOI:10.3866/PKU.WHXB201511131
聚吡咯/硝酸活化碳气凝胶纳米复合材料的制备表征及其在超级电容器中的应用
Preparation and Performance of Polypyrrole/Nitric Acid Activated Carbon Aerogel Nanocomposite Materials for Supercapacitors
摘要
Abstract
Polypyrrole (PPY)/nitric acid (HNO3) activated carbon aerogel (HCA) composites are prepared through chemical oxidative polymerization with different PPY/HCA mass ratios. Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscope (SEM) were employed to investigate the components and morphology of the samples. The results demonstrate that the synthesized materials maintain the three-dimensional nanoporous structure of the carbon aerogel (CA);the activation by nitric acid and composition with PPY do not destroy the porous structure of the carbon aerogel and the complex stil has the original three-dimensional nanoporous structure. Composites with different mass ratios (3:1, 2:1, 1:1, 1:2, 1:3) of PPY/HCA were prepared and the electrochemical properties were measured by cyclic voltammetry, galvanostatic charge-discharge test, and electrochemical impedance spectroscopy. The results confirm that the PPY/HCA composite with a ratio of 1:1 exhibits the best electrochemical performances;it has a high specific capacitance of 336 F∙g-1, which is more than two times higher than that of CA (103 F∙g-1);it also exhibits outstanding conductivity and cycling stability, retaining 91% of its initial capacitance after 2000 cycles. Therefore, this composite is quite a promising electrode material for supercapacitors.关键词
活化碳气凝胶/聚吡咯/超级电容器/化学氧化聚合法/复合电极材料/电化学性能Key words
Activated carbon aerogel/Polypyrrole/Supercapacitor/Chemical oxidative polymerization/Composite electrode material/Capacitive property分类
化学化工引用本文复制引用
李亚捷,倪星元,沈军,刘冬,刘念平,周小卫..聚吡咯/硝酸活化碳气凝胶纳米复合材料的制备表征及其在超级电容器中的应用[J].物理化学学报,2016,(2):493-502,10.基金项目
The project was supported by the National Natural Science Foundation of China (51072137,50802064,11074189), Key Projects in the National Science&Technology Pillar Program, China (2009BAC62B02), and Shanghai Committee of Science and Technology, China (11nm0501600).国家自然科学基金(51072137,50802064,11074189),国家科技支撑计划重点项目(2009BAC62B02)及上海科学技术委员会项目(11nm0501600)资助 （51072137,50802064,11074189）
