基于液态金属的多功能非织造材料制备与应用  

Preparation and Application of Multifunctional Nonwoven Fabric Based on Liquid Metal

作　　者：史纳蔓 王仕飞 干露露 周爽 张如全 周阳[1,2] 罗磊 SHI Naman;WANG Shifei;GAN Lulu;ZHOU Shuang;ZHANG Ruquan;ZHOU Yang;LUO Lei(School of Textile Science and Engineering,Wuhan Textile University,Wuhan 430200,China;State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,China;National Engineering Research Center for Nonwovens,Xinlong Holding(Group)Co.,Ltd.Haikou 570125,China)

机构地区：[1]武汉纺织大学纺织科学与工程学院,武汉430200 [2]武汉纺织大学省部共建纺织新材料与先进加工技术国家重点实验室,武汉430200 [3]欣龙控股(集团)股份有限公司国家非织造材料工程技术研究中心,海口570125

出　　处：《纺织工程学报》2023年第5期23-30,共8页JOURNAL OF ADVANCED TEXTILE ENGINEERING

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);武汉纺织大学大学生创新训练项目(S202310495013)。

摘　　要：为了制备性能优异的多功能导电非织造材料,提出一种简单高效的喷涂方法,依次将液态金属(LM)、碳纳米管(CNTs)喷涂在水刺纤维素非织造布表面,经高温碳化后所得织物(记为LM/CNTs/CC)可应用于柔性应变传感器及超级电容器。首先,通过扫描电镜和X射线衍射仪对样品进行微观形貌与结构表征分析,结果表明,LM和CNTs均匀负载在织物表面,并且CNTs将分散的LM颗粒包裹并相互连接,形成连续的导电路径,有效防止了LM在实际应用中的泄露问题。然后,对织物进行传感以及电化学性能测试,当LM/CNTs/CC作为应变传感器时,其可以监测人体各部位如手指、膝盖等发生的不同运动,并作出连续响应。当LM/CNTs/CC作为超级电容器对称电极时,在0.1 mA/cm^(2)的电流密度下,最高面积比容量可达64 mF/cm^(2),并且经过10000次充放电循环后,容量保持率为70%,表现出良好的循环稳定性。In order to prepare multifunctional conductive nonwoven materials with excellent performance,a simple and efficient spraying method was proposed,in which liquid metal(LM)and carbon nanotubes(CNTs)were sprayed onto the surface of spunlace cellulose nonwoven fabrics sequentially,and the resulting fabrics(denoted as LM/CNTs/CC)could be applied to flexible strain sensors and supercapacitors after high-temperature carbonization.Firstly,the samples were analyzed by scanning electron microscopy and X-ray diffractometer for microscopic morphology and structural characterization.The results showed that the LM and CNTs were uniformly loaded on the surface of the fabrics,and the CNTs wrapped the dispersed LM particles and connected them with each other to form a continuous conductive pathway,which effectively prevented the leakage of the LM in the practical application.Then,the fabrics were tested for sensing and electrochemical properties.When LM/CNTs/CC was used as a strain sensor,it could monitor different movements occurring in various parts of the human body,such as finger,knee,etc.,and make a continuous response.When LM/CNTs/CC was employed as the symmetric electrode of supercapacitor,a high area specific capacity of 64 mF/cm^(2) was obtained at a current density of 0.1 mA/cm^(2),and the capacity retention rate maintained at 70%after 10,000 charge/discharge cycles,which showed good cycling stability.

关 键 词：液态金属 非织造布 碳纳米管 柔性应变传感器 超级电容器 

分 类 号：TS176.9[轻工技术与工程—纺织材料与纺织品设计]