An editable yarn-based flexible supercapacitor and integrated self-powered sensor  

可编辑纱线基柔性超级电容器及集成化自供电传感器

作　　者：Qiancheng Ma Zhaofa Zhang Lin Li Dongyang Zhang Wei Tian 马骞程;张兆发;李林;张冬洋;田伟

机构地区：[1]College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China [2]College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China

出　　处：《Science China Materials》2025年第4期1117-1128,共12页中国科学(材料科学)(英文版)

基　　金：supported in part by the Science Foundation of Zhejiang Sci-Tech University(20200209-Y)。

摘　　要：The rapid development of supercapacitors and wearable devices has allowed the construction of integrated self-powered wearable devices.However,most current research focuses on increasing supercapacitor capacity and the sensitivity of sensors,overlooking the self-powered and integration of one single device.In this study,the editable,flexible yarn-based supercapacitor(FYSC)and an integrated self-powered wearable sensor(SPWS)were constructed based on one yarn.The FYSC demonstrated adjustable capacitive behaviors by controlling the electrode reduction degree,electrode spaces,and integration.The supercapacitors exhibit a high specific capacitance of 1.82 F cm^(-3),92.57%capacity retention after 5000 cycles,and stable performance under static and dynamic strain conditions.Additionally,the integrated SPWSs demonstrated the accuracy and sensitivity in discriminating bending magnitudes.The SPWSs further present the accuracy and stability in recognizing human physiological activities(joint motions of finger,wrist,knee,and elbow,respiration,and handwriting).The proposed strategy offers a practical approach to developing energy storage systems with customizable functionality.More importantly,the self-powered devices realized the integration of supercapacitors and sensors would facilitate the seamless integration of 1D functional yarns into wearable electronics.超级电容器和可穿戴设备的快速发展使集成化自供电可穿戴设备的构建成为可能.然而,目前的研究大多集中在提高超级电容器的容量和传感器的灵敏度上,而忽视了单个器件的自供电和集成化.这项研究基于单一纱线构建了可编辑的柔性纱线超级电容器(FYSC)和集成化自供电可穿戴传感器(SPWS).通过控制电极还原度、电极间距和集成方式,FYSC表现出可调节的电容行为.该超级电容器具有1.82 F cm^(-3)的高比电容,5000次循环后的电容保持率为92.57%,在静态和动态应变条件下性能稳定.此外,集成的SPWSs在识别弯曲幅度方面表现出准确性和灵敏度.SPWSs还在识别人类生理活动(手指、手腕、膝盖和肘关节运动、呼吸和书写)方面进一步显示出准确性和稳定性.本文所提出的策略为开发具有可定制功能的储能系统提供了实用方法.更重要的是,自供电器件实现了超级电容器和传感器的集成,有助于将一维功能纱线无缝集成到嵌入式可穿戴电子产品中.

关 键 词：yarn-based supercapacitor editable capacitive behavior functional yarn self-powered sensor 

分 类 号：TM53[电气工程—电器]