物理化学学报 >> 2013, Vol. 29 >> Issue (11): 2385-2391.doi: 10.3866/PKU.WHXB201309051

电化学和新能源 上一篇    下一篇

聚吡咯/海藻酸钠纳米球的制备及其应用于高性能超级电容器

马国富1, 牟晶晶1, 张稚国1, 孙看军2, 彭辉1, 雷自强1   

  1. 1 西北师范大学化学化工学院, 生态环境相关高分子材料教育部重点实验室, 甘肃省高分子材料重点实验室, 兰州 730070;
    2 兰州城市学院化学与环境科学学院, 兰州 730070
  • 收稿日期:2013-05-27 修回日期:2013-09-04 发布日期:2013-10-30
  • 通讯作者: 马国富 E-mail:magf@nwnu.edu.cn
  • 基金资助:

    国家自然科学基金(21164009,21174114)及教育部“长江学者和创新团队发展计划”(IRT1177)资助项目

Preparation of Polypyrrole/Sodium Alginate Nanospheres and Their Application for High-Performance Supercapacitors

MA Guo-Fu1, MU Jing-Jing1, ZHANG Zhi-Guo1, SUN Kan-Jun2, PENG Hui1, LEI Zi-Qiang1   

  1. 1 Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China;
    2 College of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, P. R. China
  • Received:2013-05-27 Revised:2013-09-04 Published:2013-10-30
  • Contact: MA Guo-Fu E-mail:magf@nwnu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21164009, 21174114) and Program for Changjiang Scholars and Innovative Research Team in University, China (IRT1177).

摘要:

用海藻酸钠作为结构导向剂,通过原位氧化聚合吡咯法制备了聚吡咯/海藻酸钠(PPy/SA)纳米球.聚吡咯/海藻酸钠纳米球的形貌和结构通过扫描电镜(SEM)、X射线衍射(XRD)和傅里叶变换红外(FTIR)光谱进行表征.材料的电化学性能通过循环伏安法和恒电流充放电方法进行测试.电化学测试表明,聚吡咯/海藻酸钠纳米球在1mol·L-1KCl电解液中,电流密度为1A·g-1时其比电容高达347F·g-1.与纯聚吡咯相比较,聚吡咯/海藻酸钠纳米球具有更优异的循环稳定性能.

关键词: 聚吡咯, 海藻酸钠, 纳米球, 超级电容器, 电极材料

Abstract:

Polypyrrole/sodium alginate (PPy/SA) nanospheres are successfully synthesized by oxidative polymerization of pyrrole using sodium alginate as structural templating agent. The morphology and structure of the PPy/SAnanospheres were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Their electrochemical properties are investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge tests. The PPy/SAnanospheres exhibit a high specific capacitance of 347 F·g-1 at a charge-discharge current density of 1 A·g-1 in 1 mol·L-1 KCl electrolyte. Unlike pure PPy, there was little attenuation in the capacitance of the PPy/SAnanospheres over 500 continuous charging-discharging cycles demonstrating good electrochemical stability. This result indicates that PPy/SAnanospheres are a promising candidate for high-performance supercapacitors.

Key words: Polypyrrole, Sodium alginate, Nanosphere, Supercapacitor, Electrode material

MSC2000: 

  • O646