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通过有机化学合成法先在碳纳米管表面接枝上苯胺单体,然后在不锈钢电极表面在硫酸溶液中采用循环伏安法电化学沉积聚合制得碳纳米管/聚苯胺(CNTs/PANI)纳米复合材料.扫描电子显微镜和傅立叶变换红外光谱表征所得材料的微观结构和基团,循环伏安和恒流充放电测试用于考察所得CNTs/PANI纳米复合材料的电化学性能.所得结果与在相同实验条件下用一般的电化学法制备的聚苯胺(PANI)及CNTs/PANI复合材料进行了比较分析.研究结果表明,通过有机化学接枝-电化学沉积聚合联合法所制备的CNTs/PANI纳米复合材料具有较好的多孔结构,其颗粒直径在150～250 nm之间.且具有比一般电化学法所制备的PANI(205 F.g-1)和CNTs/PANI复合材料(327 F.g-1)更高的比容量,达到366 F.g-1(充放电电流密度为22 A.m-2),而且具有良好的稳定性(循环充放电测试200次,比容量衰减小于5%).
Aniline monomers were first grafted onto the surface of carbon nanotubes by organic chemical synthesis, and then carbon nanotubes / polyaniline (CNTs / PANI) nanostructures were obtained by cyclic voltammetric electrochemical deposition polymerization on the surface of stainless steel electrode in sulfuric acid solution The microstructures and groups, cyclic voltammetry and constant current charge-discharge test were used to characterize the electrochemical properties of the obtained CNTs / PANI nanocomposites by scanning electron microscopy and Fourier transform infrared spectroscopy. PANI and CNTs / PANI composites prepared by electrochemical method were compared under the experimental conditions.The results show that CNTs / PANI nanocomposites prepared by the method of organic chemical grafting-electrochemical deposition polymerization The composites have good porous structure with particle diameter of 150 ~ 250 nm and have more properties than PANI (205 Fg-1) and CNTs / PANI composites (327 Fg-1) prepared by electrochemical method High specific capacity of 366 Fg-1 (22 Am-2 charge-discharge current density) with good stability (200 cycles of charge-discharge test and less than 5% specific capacity attenuation).