基于聚苯胺改性构建三维MXene复合材料及其电容性能

doi:10.16085/j.issn.1000-6613.2021-0842

化工进展 ›› 2021, Vol. 40 ›› Issue (11): 6211-6218.DOI: 10.16085/j.issn.1000-6613.2021-0842

基于聚苯胺改性构建三维MXene复合材料及其电容性能

李瑞¹^,²(), 谢芳霞², 朱巧霞², 陈露³, 简选³()

^1.太原理工大学环境科学与工程学院，山西太原 030024
^2.太原理工大学化学与化工学院，山西太原 030024
^3.延安大学化学与化工学院，陕西延安 716000

收稿日期:2021-04-21 修回日期:2021-08-20 出版日期:2021-11-05 发布日期:2021-11-19
通讯作者: 李瑞,简选
作者简介:李瑞（1990—），男，博士，讲师，研究方向为水分解制氢。E-mail：lirui13233699182@163.com。
基金资助:
国家自然科学基金(22008167);陕西省教育厅科研项目(19JK0962);山西省自然科学基金(201901D211100);山西省高等学校科技创新项目(2019L0138)

Preparation of three-dimensional MXene composite materials based on polyaniline modification and its capacitive performance

LI Rui¹^,²(), XIE Fangxia², ZHU Qiaoxia², CHEN Lu³, JIAN Xuan³()

^1.College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
^2.College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
^3.College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China

Received:2021-04-21 Revised:2021-08-20 Online:2021-11-05 Published:2021-11-19
Contact: LI Rui,JIAN Xuan

摘要/Abstract

摘要：

通过直接电化学法，本文利用MXene表面官能团的诱导能力，在外加电场的作用下，将苯胺单体与MXene共同修饰在不锈钢电极表面，成功制得具有三维结构的MXene/聚苯胺复合电极材料。采用SEM、XRD、XPS、FTIR和Raman光谱对复合电极材料的表面形貌、物相结构和组成进行了表征，并在1mol/L H₂SO₄中详细研究了该电极材料的电容性能。结果表明，得益于MXene的掺杂，MXene/聚苯胺复合电极表现出较好的电子传导能力和优异的电容性能，在10mV/s的扫描速率下电容可达417F/g，当扫描速率增至200mV/s时，其电容保持率为52%，比纯PANI电极高31%。该复合电极材料具有良好的循环稳定性，在1.0A/g的电流密度下循环2000次后电容保持率可维持在83.4%。此项研究工作可为三维MXene复合材料的构建提供设计思路。

关键词: 电化学, 复合材料, 聚合, MXene, 聚苯胺, 电容性能

Abstract:

Three-dimensional MXene/polyaniline composite electrode materials were successfully synthesized through direct electrochemical method. Aniline monomer was induced and electrochemically polymerized by the surface functional groups of MXene nanosheets under external electric field. The surface, structure and composition of the composite electrode material were characterized by SEM, XRD, XPS, FTIR and Raman spectra. The capacitance properties of the composite electrode material were investigated in 1mol/L H₂SO₄. The results indicate that the MXene /PANI composite electrode exhibits excellent electron conduction ability and outstanding electrochemical performance due to the MXene doping. The gravimetric capacitance of the MXene/PANI composite electrodes can reach 417F/g at a scan rate of 10mV/s, and when the scan rate increases to 200mV/s, the electrode can still retain 52% of the original specific capacitance value, which is 31% higher than that of pure PANI electrode. In addition, the composite electrode also exhibits excellent cycling stability, and the capacitance retention can be maintained up to approximately 83.4% after 2000 cycles at a current density of 1.0A/g. This research work can provide design ideas for the construction of 3D MXene composites.

Key words: electrochemistry, composites, polymerization, MXene, polyaniline, capacitive performance

中图分类号:

O646

李瑞, 谢芳霞, 朱巧霞, 陈露, 简选. 基于聚苯胺改性构建三维MXene复合材料及其电容性能[J]. 化工进展, 2021, 40(11): 6211-6218.

LI Rui, XIE Fangxia, ZHU Qiaoxia, CHEN Lu, JIAN Xuan. Preparation of three-dimensional MXene composite materials based on polyaniline modification and its capacitive performance[J]. Chemical Industry and Engineering Progress, 2021, 40(11): 6211-6218.

图/表 7

图1 MXene/PANI复合电极的电化学聚合示意图

图2 Ti3AlC2、不同放大倍数的Ti3C2Tx-MXene、纯PANI、不同放大倍数下MXene/PANI复合电极材料的SEM图及MXene/PANI复合电极材料的EDS图

图3 体相材料Ti3AlC2、Ti3C2Tx-MXene、纯PANI和MXene/PANI复合电极材料的XRD谱图

图4 纯PANI、Ti3C2Tx-MXene和MXene/PANI复合材料的红外和拉曼谱图

图5 纯PANI和MXene/PANI复合材料的XPS全谱图、纯PANI的N1s谱图和MXene/PANI复合材料的N1s谱图

图6 纯PANI和MXene/PANI复合膜电极的CV曲线、倍率性能和GCD曲线

图7 纯PANI和MXene/PANI复合膜电极的EIS谱图、在电流密度为1A·g–1下的循环测试图

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基于聚苯胺改性构建三维MXene复合材料及其电容性能

Preparation of three-dimensional MXene composite materials based on polyaniline modification and its capacitive performance

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