MXene/聚苯胺/活性炭复合电极材料的制备及其电化学性能  

Preparation and Electrochemical Performance of MXene/Polyaniline/Activated Carbon Composite Electrode Materials

作　　者：张哲睿 刘思敏 陈一[1] 刘嘉婷 ZHANG Zherui;LIU Simin;CHEN Yi;LIU Jiating(College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007

出　　处：《包装学报》2025年第2期96-103,共8页Packaging Journal

基　　金：湖南省科技计划资助项目(2022JJ50058,2023JJ50167)。

摘　　要：为了制备高性能的柔性混合超级电容器,通过化学蚀刻法合成二维过渡金属碳化物/氮化物(MXene)纳米片,并与聚苯胺(PANI)和活性炭(AC)结合,采用均匀混合后物理辊压的方法制备出柔性AC/Mxene/PANI(CMP)复合电极。AC作为高比表面积的框架材料,有效提供负载和活性位点;MXene则构建离子传输通道;PANI作为导电物质,加速MXene层间电荷转移;同时,MXene与PANI的引入因其优异的赝电容行为和增大的活性表面积,显著提升了复合电极的电化学性能。研究表明,厚度为75 μm的CMP-50%电极(AC、MXene、PANI质量比为2∶1∶1)在硫酸电解质中展现出313 F/g的高比电容(1 mV/s扫描速率下),且在5 A/g电流密度下电容保持率高达80.9%,库伦效率为98.4%。MXene与PANI的引入显著提升了复合电极的电容性能和导电性,为高性能柔性混合超级电容器的研发开辟了新路径。To prepare a high-performance flexible hybrid supercapacitor,MXene nanosheets were synthesized via chemical etching.Combined with polyaniline(PANI)and activated carbon(AC),the flexible AC/Mxene/PANI(CMP)composite electrode was fabricated through a physical rolling process after the uniform mixing.As a framework material with a high specific surface area,AC effectively provided loading and active sites,while MXene established ion transport channels.PANI,as a conductive material,accelerated charge transfer between MXene layers.Additionally,the introduction of MXene and PANI significantly enhanced the electrochemical performance of composite electrode due to their excellent pseudocapacitive behavior and increased active surface area.It demonstrated that the CMP-50%(with a mass ratio of AC,MXene and PANI is 2∶1∶1)electrode,having a thickness of 75μm,exhibited a high capacitance of 313 F/g in sulfuric acid electrolyte at a scan rate of 1 mV/s.Furthermore,it maintained a high capacitance retention rate of 80.9%and a Coulombic efficiency of 98.4%at 5 A/g current density.The introduction of MXene and PANI significantly enhanced the electrode's capacitive performance and conductivity,opening up a new path for the development of high-performanceflexible hybrid supercapacitors.

关 键 词：MXene 活性炭 聚苯胺 电化学 超级电容器 

分 类 号：TM53[电气工程—电器]