物理化学学报 >> 2007, Vol. 23 >> Issue (06): 820 -824 .doi: 10.3866/PKU.WHXB20070605

研究论文 上一篇    下一篇

低温合成樟脑磺酸掺杂聚苯胺微管的电化学电容行为

吕新美; 吴全富; 米红宇; 张校刚   

  1. 新疆大学应用化学研究所, 乌鲁木齐 830046; 南京航空航天大学材料科学与技术学院, 南京 210016

  • 收稿日期:2006-12-06 修回日期:2007-01-08 发布日期:2007-06-04
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com

Electrochemical Capacitance of Camphorsulfonic Acid Doped Polyaniline Microtubes Prepared at Low Temperature

LU Xin-Mei; WU Quan-Fu; MI Hong-Yu; ZHANG Xiao-Gang   

  1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, P. R. China; College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China

  • Received:2006-12-06 Revised:2007-01-08 Published:2007-06-04
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com

摘要:

在低温条件下合成了长约为2-3 μm, 外径约为300-400 nm 的樟脑磺酸掺杂聚苯胺微管. 扫描电镜(SEM)和透射电镜(TEM)显示, 生成的聚苯胺微管管径受樟脑磺酸浓度的影响, 高浓度的掺杂剂有利于管状聚苯胺的形成. 采用交流阻抗、循环伏安、恒流充放电等测试技术对不同产物的电化学电容行为进行了研究, 结果表明, 苯胺单体与樟脑磺酸的摩尔比为1:1时所得掺杂态聚苯胺电极具有较好的循环稳定性, 单电极比电容达到522 F·g-1.

关键词: 聚苯胺, 樟脑磺酸, 低温合成, 电化学电容器

Abstract:

Polyaniline(PANI) microtubes were prepared at low temperature with camphorsulfonic acid (CSA) as dopant. The structure and morphology of the microtubes were examined by Fourier-transforminfrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The length of the microtubes was 2-3 μm and the outer diameter was 300-400 nm. The results indicated that the higher concentration of dopant was liable to the PANI-CSA microtube formation. Electrochemical capacitance properties of the doped polyaniline electrode were investigated by means of cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements. When the molar ratio of aniline/CSA was 1:1, polyaniline had a good stability and cyclic performance, and the specific capacitance reached up to 522 F·g-1.

Key words: Polyaniline, Camphorsulfonic acid, Low temperature synthesis, Electrochemical capacitor

MSC2000: 

  • O646