功能材料2024,Vol.55Issue(1) :1223-1228.DOI:10.3969/j.issn.1001-9731.2024.01.030

碳纳米管/聚苯胺复合电极的制备及其性能表征

Preparation and performance characterization of carbon nanotubes/polyaniline composite electrodes

刘奇超 曹杨 张慧芳 顾宁 刘子萱 边月豪 刘泽民 孙友谊
功能材料2024,Vol.55Issue(1) :1223-1228.DOI:10.3969/j.issn.1001-9731.2024.01.030

碳纳米管/聚苯胺复合电极的制备及其性能表征

Preparation and performance characterization of carbon nanotubes/polyaniline composite electrodes

刘奇超 1曹杨 1张慧芳 1顾宁 2刘子萱 1边月豪 1刘泽民 1孙友谊1
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作者信息

  • 1. 中北大学材料科学与工程学院,太原 030051
  • 2. 中北大学能源与动力工程学院,太原 030051
  • 折叠

摘要

采用柔性碳布作为复合电极的集流体,将高导电性的碳纳米管(CNTs)通过静电植绒的方式嵌入聚偏氟乙烯(PVDF)粘结剂中,得到具有更大电化学活性表面积的复合结构.然后将所得的材料通过电化学沉积的方式将具有赝电容特性的聚苯胺(PANI)镀在CNTs表面,得到了具有碳纳米管/聚苯胺(CNTs/PANI)两种活性物质的二元复合电极.采用扫描电子显微镜(SEM)对电极材料的结构进行表征.并将其与含有硫酸的聚乙烯醇(PVA)水凝胶电解质组装成具有对称结构的柔性固态超级电容器(SSC),并利用电化学工作站对其电性能进行测试,结果表明:在1 mA/cm2的电流下,具有517 mF/cm2的比容量;经过2500次的循环后,具有79.8%的容量保持率,库伦效率超过97%.该研究表明静电植绒技术可以作为制备高性能电极材料的一种有效途径.

Abstract

In this paper,a flexible carbon cloth was used as the fluid collector of the composite electrode,and the high-conductivity carbon nanotubes(CNTs)were embedded into the polyvinylidiene fluoride(PVDF)bind-er by electrostatic flocking to obtain a composite structure with a larger electrochemically active surface area.Then,polyaniline(PANI)with pseudocapacitance characteristics was plated on the surface of CNTs by electro-chemical deposition,and a binary composite electrode with carbon nanotubes/polyaniline(CNTs/PANI)was obtained.The structure of the electrode material was characterized by scanning electron microscopy(SEM).The flexible solid-state supercapacitor(SSC)with symmetrical structure was assembled with polyvinyl alcohol(PVA)hydrogel electrolyte containing sulfuric acid,and its electrical performance was tested by electrochemi-cal workstation.The results show that the SSC has a specific capacity of 517 mF/cm2 at a current of 1 mA/cm2.After 2500 cycles,it has a capacity retention rate of 79.8%and a Coulomb efficiency of more than 97%.The study shows that electrostatic flocking technology can be used as an effective way to prepare high performance electrode materials.

关键词

碳纳米管/聚苯胺/静电植绒/电化学沉积

Key words

carbon nanotubes/polyaniline/electrostatic flocking/electrochemical deposition

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基金项目

中央引导地方专项基金(YDZJSX2021A026)

山西省成果转化项目(202104021301059)

山西省科技创新团队专项基金(202204051001006)

出版年

2024
功能材料
重庆材料研究院 中国仪器仪表学会仪表材料学会

功能材料

CSTPCD北大核心
影响因子:0.918
ISSN:1001-9731
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