有机化学接枝-电化学沉积聚合制备CNTs/PANI纳米复合材料  

PREPARATION OF CARBON NANOTUBES/POLYANILINE NANO-COMPOSITES BY ORGANIC CHEMISTRY INARCHING-ELECTROCHEMISTRY DEPOSITION POLYMERIZATION

作　　者：赵晓锋[1] 江奇[1] 张 蒋海春[1] 孙培秋[1] 易超绝[1] 赵勇[1,2] 

机构地区：[1]西南交通大学超导研究开发中心材料先进技术教育部重点实验室,成都610031 [2]School of Materials Science and Engineering, University of New South Wales, Sydney, 2052 NSW, Australia

出　　处：《高分子学报》2011年第4期384-389,共6页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50907056,50588201);中央高校基本科研业务费专项资金(基金号SWJTU09CX053);四川省应用基础研究基金(基金号2008JY0061);西南交通大学工程实践项目(基金号11-2)资助项目

摘　　要：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%).The aniline was inarched on the surface of the carbon nanotubes （CNTs） by a series of organic chemistry reactions （carboxylic acid reaction,chloride reaction and amidation reaction）. Then,the CNTs with the aniline and the other aniline were polymerized in the sulfuric acid solution on the surface of stainless steel electrode by electrochemistry cyclic voltammetry deposition method,namely a combination method. The micro-structure and groups of sample were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The electrochemical performances of obtained materials were characterized by cyclic voltammetry and galvanostatic charging/discharging testing. In order to study the obtained composite merits from the combination method,electrochemistry deposition method was used to prepare pure polyaniline （PANI） and CNTs/PANI composite at the same experimental conditions. The experimental results showed that the CNTs /PANI composite by the combination method had a better porous structure; the diameter of the CNTs /PANI composite was 150～250 nm. Moreover,the CNTs/PANI composite made by the combination method had the highest capacitance,up to 366 F.g -1 with 22 A.m-2 charging-discharging current density,and capacitances of the CNTs /PANI and the PANI prepared by the electrochemistry deposition method were 327 and 205 F. g-1,respectively. And the composite from the combination method had the best stability （capacitance decline was under 5% after the 200 cycle times and that of the CNTs/PANI and the PANI prepared by the electrochemistry deposition method was up to 7% and 9%,respectively）.

关 键 词：碳纳米管/聚苯胺纳米复合材料 有机化学接枝-电化学沉积聚合联合法 电化学性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]