文献类型：期刊文献

中文题名：功能化碳纳米管膜负载聚(2,5-二羟基-1,4-苯醌硫)柔性电极的制备及在柔性非对称超级电容器中的应用

英文题名：Synthesis of Functionalized CNT Film-Supported Poly (2,5-dihydroxy-1,4-benzoquinonyl sulfide) Flexible Electrode and Its Application in Flexible Asymmetric Supercapacitors

作者：王健[1];胡稳茂[2];王庚超[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]西安航天三沃化学有限公司特种涂料分公司,西安710025

年份：2019

卷号：32

期号：2

起止页码：184

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家自然科学基金(51673064);政府间国际科技创新合作重点专项(2016YFE0131200);上海市科委国际合作项目(15520720500)

语种：中文

中文关键词：聚(2,5-二羟基-1,4-苯醌硫);碳纳米管;重氮化;柔性非对称超级电容器;循环稳定性

外文关键词：poly(2,5-dihydroxy-1,4-benzoquinonyl sulfide);carbon nanotube;diazotization;flexible organic asymmetric supercapacitor;cycle performance

摘要：通过对碳纳米管(CNT)膜进行重氮化处理,制备对氯苯胺修饰碳纳米管(pca-CNT)膜,并以pca-CNT膜为基底,原位缩聚生长聚(2,5-二羟基-1,4-苯醌硫)(PDBS),构筑pca-CNT负载PDBS(pca-CNT@PDBS)柔性电极。采用场发射扫描电镜、透射电镜、能谱仪、傅里叶红外光谱和光电子能谱等表征了pca-CNT@PDBS电极材料的形貌和结构,研究了CNT膜功能化之后对电极材料结构及电化学性能的影响。研究表明,当电流密度为1mA/cm^2时,pca-CNT@PDBS柔性电极的比电容达到108.0mF/cm^2,明显高于PDBS电极材料(65.6mF/cm^2)和纯碳纳米管膜负载的PDBS(CNT@PDBS,83.2mF/cm^2)。分别以pca-CNT@PDBS、CNT@PDBS为柔性正极,以CNT膜负载的聚(1,5-二氨基蒽醌)(CNT@PDAA)为柔性负极,与丙烯酸酯橡胶/四乙基四氟硼酸铵-乙腈准固态电解质(ACM/Et4NBF4-AN)匹配组装,得到柔性有机非对称超级电容器。当电流密度为2mA/cm^2时,pca-CNT@PDBS//ACM/Et4NBF4-AN//CNT@PDAA的比电容为79.6mF/cm^2;当功率密度为63.5 mW/cm3时,其能量密度达到1.63 mW·h/cm3。CNT@PDBS//ACM/Et4NBF4-AN//CNT@PDAA在循环7 500次以后,比电容保持率仅为30.5%,而pca-CNT@PDBS//ACM/Et4NBF4-AN//CNT@PDAA循环充放电8 000次后,比电容保持率为80.5%,循环稳定性较前者大幅提高。
p-Chloroaniline modified carbon nanotube film(pca-CNT)was prepared by diazotization reaction of carbon nanotube(CNT)film.Poly(2,5-dihydroxy-1,4-benzoquinonyl sulfide)(PDBS)was grown uniformly on the the surface of pca-CNT by in situ polycondensation method.The obtained pca-CNT@PDBS composite was used as flexible electrode later.The morphology and structure of composite was characterized by field scanning electron microscope(FE-SEM),field transmission electron microscope(TEM),energy dispersive spectrum(EDS),Fourier infrared spectrum(FI-IR)and photoelectron spectroscopy(XPS).The results indicated that PDBS was coated on the pca-CNT film successfully.The electrochemical testing showed that the pca-CNT@PDBS flexible electrode exhibited an area specific capacitance(C A)of 108 mF/cm^2 at the current density of 1 mA/cm^2,higher than pure PDBS(65.6 mF/cm^2)and CNT-supported PDBS(CNT@PDBS,83.2 mF/cm^2).With the pca-CNT@PDBS and CNT@PDBS as flexible positive electrode respectively,CNT-supported poly(1,5-diamino-anthraquinone)(CNT@PDDA)as flexible negative electrode,and crylic rubber cross-linked memberane/tetraethyl tetrafluorate acetonitrile electrolyte(ACM/Et 4NBF 4-AN)as the quasi-solid-state electrolyte,organic asymmetric supercapacitor were assembled at the same time.The electrochemical results showed that area specific capacitance of the as-assembled flexible organic asymmetric supercapacitor was 79.6 mF/cm^2 at the current density of 2 mA/cm^2 and its volumetric energy density was 1.63 mW·h/cm^3 at the power density of 63.5 mW/cm^3.The capacitance retention of CNT@PDBS//ACM/Et 4NBF 4-AN//CNT@PDAA organic asymmetric supercapacitor was about 30.5%after only 7500 cycles,exhibiting bad cycle performance.After 8 000 charging-discharging cycles,specific capacitance retention of pca-CNT@PDBS//ACM/Et 4NBF 4-AN//CNT@PDAA was 80.5%,presenting much better cycle performance.