聚苯胺/Ti_(3)C_(2)T_(x)/碳纳米管复合纤维电极的制备及其性能  

Preparation and properties of polyaniline/Ti_(3)C_(2)T_(x)/carbon nanotube composite fiber-based electrodes

作　　者：郭子娇 李悦 张瑞[1] 陆赞 GUO Zijiao;LI Yue;ZHANG Rui;LU Zan(School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China)

机构地区：[1]上海工程技术大学纺织服装学院,上海201620

出　　处：《纺织学报》2022年第2期74-80,共7页Journal of Textile Research

基　　金：国家自然科学基金项目(52003152);上海市科技人才计划项目(19YF1417700)。

摘　　要：为制备电化学性能优异的一维纤维超级电容器,利用碳纳米管(CNT)的液晶态性质和MXene(Ti_(3)C_(2)T_(x))材料的电化学性能协同制备复合纤维作为电极基体,运用简单可控的电化学沉积方法在纤维表面沉积聚苯胺(PANI)制备复合纤维电极。对纤维进行微观形貌表征和电化学性能测试,获得最佳沉积时间的电极并组装纤维超级电容器。研究表明:当沉积5 min时,在5 mV/s的扫描速度下PANI/Ti_(3)C_(2)T_(x)/CNT纤维电极表现出最大的体积比电容,为113.92 F/cm^(3);在0.1 A/cm^(3)的电流密度下证明其组装的超级电容器比电容可达65.4 F/cm^(3),同时在0.8 A/cm^(3)电流密度下循环5000次后,比电容保持率为79%,具有良好的稳定性。In order to prepare portable,one-dimensional fiber supercapacitors with required electrochemical properties,composite fibers were prepared as electrode substrates using the liquid crystal state of carbon nanotubes(CNT)and MXene(Ti_(3)C_(2)T_(x)) synergistically.A simple and controllable electrochemical deposition method was applied to deposit polyaniline(PANI)on the fiber surface to prepare composite fiber electrodes.Microscopic morphological characterization and electrochemical performance tests were performed on the fibers to obtain the electrode with the optimal deposition time and assemble the fiber supercapacitor.The result shows that the PANI/Ti_(3)C_(2)T_(x)/CNT fiber electrode exhibits the highest bulk specific capacitance of 113.92 F/cm^(3)at a scan rate of 5 mV/s when deposited for 5 min.The specific capacitance of the assembled supercapacitor reached 65.4 F/cm^(3) at a current density of 0.1 A/cm^(3).The retention rate of the specific capacitance is 79%after 5000 cycles at 0.8 A/cm^(3),indicating good stability.

关 键 词：纤维电极 电化学沉积 纤维超级电容器 聚苯胺 碳纳米管 复合纤维 

分 类 号：TM533[电气工程—电器]