基于MXene的导电织物构筑及其多功能应用  

Construction of MXene-based conductive fabrics and their multifunctional applications

作　　者：卢道坤 王仕飞 董倩 史纳蔓 李思琦 干露露 周爽 沙莎 张如全 罗磊 LU Daokun;WANG Shifei;DONG Qian;SHI Naman;LI Siqi;GAN Lulu;ZHOU Shuang;SHA Sha;ZHANG Ruquan;LUO Lei(College of Textile Science and Engineering,Wuhan Textile University,Wuhan,Hubei 430200,China;Xinlong Holding(Group)Co.,Ltd.,Haikou,Hainan 570125,China)

机构地区：[1]武汉纺织大学纺织科学与工程学院,湖北武汉430200 [2]欣龙控股(集团)股份有限公司,海南海口570125

出　　处：《纺织学报》2024年第9期137-145,共9页Journal of Textile Research

基　　金：湖北省重点研发计划项目(2020DGC003);湖北省自然科学基金项目(2021CFB478);武汉市科技局国家重点实验室专项资助项目(2022013988065214);武汉纺织大学大学生创新训练项目(S202310495013)。

摘　　要：为拓展二维碳化钛材料在智能纺织品中的应用,以纤维素非织造布为基材,将Ti_(3)C_(2)T_(x)和碳纳米管(CNTs)喷涂在纤维素非织造布上,制备出一种集传感、储能、热能转换于一体的多功能复合导电织物。借助扫描电子显微镜、X射线衍射仪及傅里叶变换红外光谱仪对Ti_(3)C_(2)T_(x)及其改性织物的表面形貌及结构进行表征。结果表明:Ti_(3)C_(2)T_(x)/CNTs/非织造布具有优异的电热和光热转化性能,在15 V电压下织物快速升温至115℃,且在室温(32℃)条件下,织物经阳光照射后表面快速升温至65℃;所制备的柔性半固态超级电容器,在电流密度为0.2 A/cm^(2)下,最大面积比电容达到125 mF/cm^(2),即使在10000次充放电循环后仍保持74%的电容;作为应变传感器时,表现出明显的负电阻变化和高灵敏度,能准确检测出手指弯曲、肘部弯曲、膝盖弯曲等人体动作。Objective The two-dimensional material MXene can be easily integrated with textiles because of its excellent dispersion,good mechanical properties,and high conductivity,and has shown potential applications in many areas.In order to expand the application of two-dimensional titanium carbide materials into smart textiles,Ti_(3)C_(2)T_(x)and carbon nanotubes(CNTs)were sprayed on pure nonwovens as the substrate to prepare a multifunctional electronic textile which integrates sensing,energy storage,and thermal energy conversion.Method Ti_(3)C_(2)T_(x)MXene sheets were synthesized through the typical chemical etching method by selectively etching Al layer from Ti_(3)AlC_(2) phase.Ti_(3)C_(2)T_(x)(2 mg/mL)and CNTs dispersion(2 mg/mL)were then ultrasonically mixed(at a volume ratio of 1∶1)and repeatedly sprayed on nonwoven fabric substrate until the surface resistance of the fabric was lower than 150Ω.The Ti_(3)C_(2)T_(x)/CNTs/nonwoven(MCF)composite was finally prepared and characterized by scanning electron microscope and X-ray diffraction.In addition,the photothermal and electrothermal conversion performance,electrochemical properties and sensing performance were also explored.Results The thread-like CNTs on the fabric surface were wrapped around the entangled Ti_(3)C_(2)T_(x)flake,connecting Ti_(3)C_(2)T_(x)from different regions and forming a stable conductive network.The Ti_(3)C_(2)T_(x)was successfully synthesized and uniformly attached on the surface of nonwoven substrate.When MCF was used for photothermal conversion,it was quickly heated up to 65℃in 60 min and maintained stable.In terms of the electrical heating performance,the thermal response time of MCF was shorter than 2 s,and the aperture on the infrared thermal image was uniformly distributed.The reason is that the addition of CNTs further improved the overall conductivity of the material,and exploited the large volume and contact area of the CNTs to bond with more Ti_(3)C_(2)T_(x),and created more conductive pathways on the surface of the fabric.When

关 键 词：导电织物 Ti_(3)C_(2)T_(x) 碳纳米管 光热性能 电热性能 电容器 传感器 纤维素非织造布 

分 类 号：TS195.2[轻工技术与工程—纺织化学与染整工程]