循环伏安法共聚苯胺/吡咯及其超级电容性能

doi:10.3969/j.issn.0438-1157.2012.10.029

化工学报 ›› 2012, Vol. 63 ›› Issue (10): 3208-3212.DOI: 10.3969/j.issn.0438-1157.2012.10.029

循环伏安法共聚苯胺/吡咯及其超级电容性能

李常雄, 戴亚堂, 张欢, 马欢, 贾玉蓉, 周龙平, 张杰

四川省非金属复合与功能材料重点实验室, 省部共建国家重点实验室培育基地, 西南科技大学, 四川绵阳 621010

收稿日期:2012-01-15 修回日期:2012-03-18 出版日期:2012-10-05 发布日期:2012-10-05
通讯作者: 戴亚堂
作者简介:戴亚堂,李常雄(1985- ),男,硕士研究生。
基金资助:
西南科技大学研究生创新基金项目(10ycjj07)。

Copolymerization of aniline/pyrrole by cyclic voltmmetric method and its supercapacitor performance

LI Changxiong, DAI Yatang, ZHANG Huan, MA Huan, JIA Yurong, ZHOU Longping, ZHANG Jie

State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

Received:2012-01-15 Revised:2012-03-18 Online:2012-10-05 Published:2012-10-05
Supported by:
supported by the Southwest University of Science and Technology Innovation Foundation for Graduate Students(10ycjj07).

摘要/Abstract

摘要： 采用循环伏安法,以硫酸和对甲苯磺酸作为掺杂剂,在A304不锈钢基体表面制备了苯胺/吡咯共聚物膜(PANPY)。采用傅里叶变换红外光谱(FT-IR)和扫描电镜(SEM)分析由不同苯胺/吡咯摩尔比合成的PANPY的成分和形貌,在0.5 mol·L^-1硫酸溶液中通过循环伏安(CV)、恒电流充放电和电化学阻抗(EIS)考察了共聚膜的电化学容量性能。结果表明,随着吡咯浓度的增加,更多的吡咯单体进入PANPY中;当苯胺/吡咯摩尔比为1:1时,制得共聚膜PANPY(1/1),其表面主要由蘑菇云状颗粒和少量网状结构构成,其离子交换容量、循环稳定性及超级电容性能明显优于PANPY(1/2)和PANPY(2/1),其电荷转移电阻低至1.97 Ω,比电容高达227.88 F·g^-1。

关键词: 循环伏安法, 苯胺, 吡咯, 共聚, 超级电容器

Abstract: Poly(anilin-co-pyrrole)(PANPY)was synthesized on A304 stainless steel by the cyclic voltmmetric method from aniline/pyrrole with H₂SO₄ and p-TSA as dopant.The composition and morphology of PANPY films synthesized by different mole ratios of aniline/pyrrole were characterized by Fourier transfered infared spectroscopy(FT-IR)and scanning electron microscopy(SEM).The supercapacitor performance of the PANPY films were also investigated in 0.5 mol·L^-1 H₂SO₄ solution with cyclic voltammetry(CV)cycling in the range of-0.2 V to 0.7 V(vs SCE),charge/discharge tests and electrochemical impedance spectroscopy(EIS).The results showed that more pyrrole units were incorporated into the PANPY films when the concentration of pyrrole increased.The surface of PANPY(1/1)films synthesized from aniline/pyrrole(1:1 mole ratio)was mainly mushroom-like spheres with some network structure.The PANPY(1/1)films displayed much higher ion exchange capacity,better stability and excellent supercapacitor performance than PANPY(1/2)and PANPY(2/1).The charge transfer resistance of the PANPY(1/1)films was as low as 1.97 Ω,and the specific capacitance was up to 227.88 F·g^-1.

Key words: cyclic voltmmetric, aniline, pyrrole, copolymerization, supercapacitor

中图分类号:

O646

李常雄, 戴亚堂, 张欢, 马欢, 贾玉蓉, 周龙平, 张杰. 循环伏安法共聚苯胺/吡咯及其超级电容性能[J]. 化工学报, 2012, 63(10): 3208-3212.

LI Changxiong, DAI Yatang, ZHANG Huan, MA Huan, JIA Yurong, ZHOU Longping, ZHANG Jie. Copolymerization of aniline/pyrrole by cyclic voltmmetric method and its supercapacitor performance[J]. CIESC Journal, 2012, 63(10): 3208-3212.

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循环伏安法共聚苯胺/吡咯及其超级电容性能

Copolymerization of aniline/pyrrole by cyclic voltmmetric method and its supercapacitor performance

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