摘要
利用片层状Ti_(3)C_(2)T_(x)和管状CNT的材料特点,达到相互抑制自堆叠的作用。为进一步增加纤维内的离子通道,通过湿法纺丝将CNT与具有表面中孔结构的Ti_(3)C_(2)T_(x)纺成复合纤维,并将其作为超级电容器的电极材料。结果表明,p-Ti_(3)C_(2)T_(x)/CNT纤维具有良好的电化学性能,在5 mV/s的扫描速率下,纤维电极具有167.9 F/cm^(3)的体积比电容。组装成对称型纤维超级电容器时,在电流密度为0.2 A/cm^(3)下体积比电容为107.6 F/cm^(3)。在电流密度为1 A/cm^(3)时经过10000次充放电循环后,比电容保持率可达到88.3%,并且在不同弯曲状态下也能表现出良好的电化学性能。
The purpose of suppressing self-stacking between 2D materials was achieved by using the structural characteristics of Ti_(3)C_(2)T_(x) and carbon nanotube(CNT).A mesoporous structure was priorily constructed on the surface of Ti_(3)C_(2)T_(x),and composite fibers were synergistically prepared with CNT by wet spinning,which further increased the ion transport channels in the fiber electrode.The results show that the p-Ti_(3)C_(2)T_(x)/CNT fiber electrode exhibited the highest volumetric capacitance of 167.9 F/cm^(3) at a scan rate of 5 mV/s.The specific capacitance of the assembled symmetric fiber supercapacitor was 107.6 F/cm^(3) at a current density of 0.2 A/cm^(3).The specific capacitance retention rate reached at 88.3%after 10000 charge-discharge cycles and showed a good electrochemical performance under different bending angles.
作者
郭子娇
陆赞
GUO Zijiao;LU Zan(School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第6期6164-6170,共7页
Journal of Functional Materials
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)。
