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5-磺基水杨酸掺杂聚吡咯/ZIF67复合材料的超电容性能

李文青 王艺锟 王全璐 张婷婷 韩永芹

李文青, 王艺锟, 王全璐, 等. 5-磺基水杨酸掺杂聚吡咯/ZIF67复合材料的超电容性能[J]. 复合材料学报, 2021, 39(0): 1-13
引用本文: 李文青, 王艺锟, 王全璐, 等. 5-磺基水杨酸掺杂聚吡咯/ZIF67复合材料的超电容性能[J]. 复合材料学报, 2021, 39(0): 1-13
Wenqing LI, Yikun WANG, Quanlu WANG, Tingting ZHANG, Yongqin HAN. Supercapacitive performances of 5-sulfosalicylic acid doped polypyrrole/ZIF67 composites[J]. Acta Materiae Compositae Sinica.
Citation: Wenqing LI, Yikun WANG, Quanlu WANG, Tingting ZHANG, Yongqin HAN. Supercapacitive performances of 5-sulfosalicylic acid doped polypyrrole/ZIF67 composites[J]. Acta Materiae Compositae Sinica.

5-磺基水杨酸掺杂聚吡咯/ZIF67复合材料的超电容性能

基金项目: 国家自然科学基金面上项目(52173258)
详细信息
    通讯作者:

    韩永芹,博士,副教授,博士生导师,研究方向为导电高分子复合材料 E-mail: hanyq@sdust.edu.cn

  • 中图分类号: TB332

Supercapacitive performances of 5-sulfosalicylic acid doped polypyrrole/ZIF67 composites

  • 摘要: 为充分利用MOF丰富的多孔结构与导电聚合物的独特掺杂结构,研究掺杂剂对MOF/导电聚合物复合材料的结构及电化学性能的影响,以实现稳定的化学掺杂。通过调控Co2+与2-甲基咪唑的配比常温反应制备得到三维花状结构的ZIF-67(命名为Z8);利用简便的原位聚合反应制备得到5-磺基水杨酸(5-SSA)掺杂聚吡咯(PPy)/Z8复合材料。Z8的引入能在一定程度上减少PPy微球的堆积,其与5-SSA之间的多重氢键、共轭效应等有利于PPy实现稳定的化学掺杂,其有利于电子及电解质离子的快速传输,并为PPy提供支撑。电化学测试结果表明,所有的复合材料中,PPy/10wt%Z8可获得最佳的电化学性能,其在1 A·g−1的电流密度下的比电容可达300 F·g−1。以PPy/10wt%Z8为正极,活性炭为负极,柔性碳布作为支撑体,PVA-H2SO4为电解质组装得到柔性非对称超级电容器,在1 mA·cm−2的电流密度下,其比电容为200 mF·cm−2,能量密度为71 μW·h·cm−2,功率密度为800 μW·cm−2,并且在10 mA·cm−2电流密度下循环10000次后,器件的电容保持率为80.2%,表现出良好的超电容特性。

     

  • 图  1  聚吡咯(PPy)/Z8复合材料的合成示意图

    Figure  1.  Schematic diagram of the synthesis process of polypyrrole (PPy)/Z8 composite

    图  2  Z8 (a);PPy (b);PPy/5wt%Z8 (c);PPy/10wt%Z8 (d);PPy/20wt%Z8 (e);PPy/30wt%Z8 (f)的SEM照片

    Figure  2.  SEM images of Z8 (a); PPy (b); PPy/5wt%Z8 (c); PPy/10wt%Z8 (d); PPy/20wt%Z8 (e) and PPy/30wt%Z8 (f)

    图  3  PPy/5wt%Z8 (a);PPy/10wt%Z8 (b);PPy/20wt%Z8 (c);PPy/30wt%Z8(d)的TEM照片

    Figure  3.  TEM images of PPy/5wt%Z8 (a) ;PPy/10wt%Z8(b) ;PPy/20wt%Z8(c) and PPy/30wt%Z8(d)

    图  4  Z8,PPy,PPy/5wt%Z8,PPy/10wt%Z8,PPy/20wt%Z8和PPy/30wt%Z8的红外光谱图(a)和XRD图谱 (b);PPy,PPy/5wt%Z8,PPy/10wt%Z8,PPy/20wt%Z8和PPy/30wt%Z8的Raman图谱(c)和ESR图谱(d)

    Figure  4.  FTIR (a) and XRD (b) spectra of Z8, PPy, PPy/5wt%Z8, PPy/10wt%Z8, PPy/20wt%Z8 and PPy/30wt%Z8; Raman (c) and ESR (d) spectra of PPy, PPy/5wt%Z8, PPy/10wt%Z8, PPy/20wt%Z8 and PPy/30wt%Z8

    图  5  PPy,PPy/5wt%Z8,PPy/10wt%Z8,PPy/20wt%Z8和PPy/30wt%Z8的XPS全谱图(a);PPy(b),PPy/5wt%Z8(c),PPy/10wt%Z8(d) ,PPy/20wt%Z8(e)和PPy/30wt%Z8(f) 的C1s XPS谱图

    Figure  5.  XPS (a) spectra of PPy, PPy/5wt%Z8, PPy/10wt%Z8, PPy/20wt%Z8 and PPy/30wt%Z8; C1s XPS spectra of PPy (b), PPy/5wt%Z8 (c), PPy/10wt%Z8(d), PPy/20wt%Z8(e) and PPy/30wt%Z8 (f)

    图  6  PPy (a),PPy/5wt%Z8(b),PPy/10wt%Z8(c),PPy/20wt%Z8(d)和 PPy/30wt%Z8(e)的N1s XPS谱图

    Figure  6.  N1s XPS spectra of PPy (a); PPy/5wt%Z8(b); PPy/10wt%Z8(c);PPy/20wt%Z8(d) and PPy/30wt%Z8(e)

    图  7  PPy和PPy/Z8在三电极体系中的CV曲线(a); PPy/10wt%Z8在不同扫描速率下的CV曲线(b);PPy和PPy/Z8在1 A·g−1下的GCD曲线(c);PPy/10wt%Z8在不同电流密度下的GCD曲线(d);PPy和PPy/Z8的EIS曲线(e);Z8,PPy和PPy/Z8在10 A·g−1下的循环稳定性(f)

    Figure  7.  CV curves of PPy and PPy/Z8 in three-electrode system(a); CV curves of PPy/10wt%Z8 at different scanning rates(b); GCD curves of PPy and PPy/Z8 under 1 A·g−1(c); GCD curves of PPy/10wt%Z8 at different current densities(d); EIS curve of PPy and PPy/Z8(e);Cyclic stability of Z8, PPy and PPy/Z8 at 10 A·g−1(f)

    图  8  PPy/10wt%Z8//AC器件在不同电压范围内的CV曲线(a);不同电流密度下的GCD曲线(b)和比电容值(c);EIS曲线(d);与文献中数据相比较的Ragone图(e);在10 mA·cm−2下的循环稳定性(f);点亮LED电路板的照片(g)

    Figure  8.  CV curves of PPy/10wt%Z8//AC devices in different voltage ranges(a); GCD curves (b) and specific capacitance (c) under different current densities; EIS curve (d); Ragone plots of the devices comparing with the data previously reported (e); Cycle stability at 10 mA·cm−2 (f) ; photo of lit LED circuit board(g)

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出版历程
  • 收稿日期:  2021-10-09
  • 录用日期:  2021-12-08
  • 修回日期:  2021-11-28
  • 网络出版日期:  2021-12-31

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