基于PEDOT柔性纳米管的超级电容器储能特性研究  

Energy storage performance of supercapacitor based on PEDOT flexible nanotube electrode

作　　者：毛喜玲 牛婷婷 刘豪 刘佳 MAO Xiling;NIU Tingting;LIU Hao;LIU Jia(School of Instrument and Electronics,North University of China,Taiyuan 030051,China;School of Energy and Power Engineering,North University of China,Taiyuan 030051,China;School of Electrical and Control Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器与电子学院,山西太原030051 [2]中北大学能源与动力工程学院,山西太原030051 [3]中北大学电气与控制工程学院,山西太原030051

出　　处：《电子元件与材料》2024年第10期1199-1206,共8页Electronic Components And Materials

基　　金：国家自然科学基金青年基金(62004178);山西省基础研究计划资助项目(20210302124311,20210302124266)。

摘　　要：针对柔性电极材料比容量低、可弯曲性差、在基底上的附着性差、易脱落的难题,采用简单可控的气相聚合法(VPP)在碳布上原位生长聚3,4-乙烯二氧噻吩(PEDOT)纳米管材料。其中,碳布(CC)作为柔性基底和集流体具有有序的电子通道,而在碳布上均匀包覆的PEDOT纳米管材料不仅能暴露更多的电化学活性位点,还可以有效提升电化学反应效率及电极/电解质的界面稳定性。研究不同聚合温度对PEDOT/CC电极材料表面形貌及储能特性的影响,实验结果表明,当聚合温度为130℃,聚合时间为120min时,PEDOT/CC电极材料的电化学性能最优(663.34F/g@1A/g)。将NiCo-MOF作正极,PEDOT/CC作负极,组装非对称超级电容器,器件的工作电压窗口可以达到1.6V,在1A/g时的比电容为178.19F/g,并展现出较高的能量密度(53.84Wh/kg)。这项工作表明,在碳布上原位生长纳米管提升电极的反应动力学是构筑高性能非对称超级电容器的有效途径之一。Aiming to solve the problems of low specific capacity,poor bendability,poor adhesion and easy falling off from the electrode materials of the supercapacitors,the poly 3,4-ethylenedioxthiophene(PEDOT)with nanotube structures was in-situ grown on carbon cloth(CC)by a simple vapor phase polymerization(VPP).In this process,the carbon cloth,serving as a flexible substrate and current collector,provided the ordered electronic channels.The PEDOT nanotubes uniformly coated on CC can not only expose more electrochemical active sites but also effectively enhance the electrochemical reaction efficiency and electrode/electrolyte interface stability.Additionally,the effects of different polymerization temperatures on the surface morphology and energy storage characteristics were explored.PEDOT/CC electrode materials show the best electrochemical performance under the optimal experimental conditions(130℃,120min),with the specific capacitance reaching 663.34F/g at 1A/g.Furthermore,the asymmetric device was assembled with NiCo-MOF as the positive electrode and the PEDOT/CC as the negative electrode,having a voltage window of 1.6V.Its specific capacitance could reach 178.19F/g and exhibit a high energy density of 53.84Wh/kg at 1A/g.This work shows that improving the electrode reaction kinetics via PEDOT nanotubes in-situ grown on CC is one of the effective ways to construct high performance asymmetric supercapacitors.

关 键 词：PEDOT 气相聚合法 柔性电极材料 非对称超级电容器 

分 类 号：TM53[电气工程—电器]