中间相炭微球改性聚苯胺超级电容器电极材料研究

发布时间：2018-02-17 04:01

本文关键词： 聚苯胺中间相炭微球原位化学聚合法超级电容器　出处：《广西师范大学学报(自然科学版)》2017年04期 　论文类型：期刊论文

【摘要】：本文以活性中间相炭微球为基底,过硫酸铵(APS)为氧化剂,通过原位化学聚合法聚合苯胺,得到聚苯胺/活性中间相炭微球复合材料(PANI/A-MCMB),采用扫描电子显微镜(SEM)、X-射线衍射仪(XRD)对其形貌和结构进行表征。以PANI/A-MCMB复合物为电极活性物质,1.0 mol/L H_2SO_4水溶液为电解液,组装对称型超级电容器,用循环伏安法(CV)、电化学交流阻抗(EIS)、恒流充放电(GCD)等测试手段测试超级电容器的电化学性能。实验结果表明,电流密度恒为0.1A/g时,PANI/A-MCMB复合材料单电极比容量为301.6F/g,1 000次循环后比容量为276.3F/g,比电容保持率为91.6%,较PANI材料(比容量为228F/g,1 000次循环后比电容保持率为39.5%)具有更好的比容量和循环稳定性。
[Abstract]:In this paper, the active mesophase carbon microspheres were used as substrate and ammonium persulfate (APS) as oxidant to polymerize aniline by in situ chemical polymerization. Polyaniline / active mesophase carbon microsphere composite (PANI- A-MCMBN) was prepared and characterized by scanning electron microscopy (SEM). The morphology and structure of the composite were characterized by scanning electron microscopy (SEM). The PANI/A-MCMB complex was used as the electrode active material and 1.0 mol/L H2SO4 as electrolyte. The electrochemical performance of the supercapacitor was tested by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and constant current charge / discharge (GCD). When the current density is constant at 0.1A / g, the specific capacity of single electrode is 301.6 F / g and the specific capacity is 276.3 F / g after 1 000 cycles, and the specific capacitance retention is 91.6%, which is better than that of PANI material (the specific capacity is 228F / g 1 000 cycles and the capacitance retention ratio is 39.5%).
【作者单位】：广西师范大学化学与药学学院;省部共建药用资源化学与药物分子工程国家重点实验室;广西低碳能源材料重点实验室;
【基金】：中国博士后科学基金(2014M562499XB) 国家自然科学基金(U1401246,51474110)
【分类号】：TB332;TM53

【相似文献】