静电纺丝
材料科学
纳米纤维
电极
MXenes公司
纳米技术
可伸缩电子设备
电解质
石墨烯
标度系数
水平扫描速率
电化学
复合材料
聚合物
数码产品
循环伏安法
制作
电气工程
工程类
病理
医学
物理化学
化学
替代医学
作者
Ariana Levitt,Shayan Seyedin,Jizhen Zhang,Xuehang Wang,Joselito M. Razal,Geneviève Dion,Yury Gogotsi
出处
期刊:Small
[Wiley]
日期:2020-06-05
卷期号:16 (26)
被引量:81
标识
DOI:10.1002/smll.202002158
摘要
Abstract Electroactive yarns that are stretchable are desired for many electronic textile applications, including energy storage, soft robotics, and sensing. However, using current methods to produce these yarns, achieving high loadings of electroactive materials and simultaneously demonstrating stretchability is a critical challenge. Here, a one‐step bath electrospinning technique is developed to effectively capture Ti 3 C 2 T x MXene flakes throughout continuous nylon and polyurethane (PU) nanofiber yarns (nanoyarns). With up to ≈90 wt% MXene loading, the resulting MXene/nylon nanoyarns demonstrate high electrical conductivity (up to 1195 S cm −1 ). By varying the flake size and MXene concentration, nanoyarns achieve stretchability of up to 43% (MXene/nylon) and 263% (MXene/PU). MXene/nylon nanoyarn electrodes offer high specific capacitance in saturated LiClO 4 electrolyte (440 F cm −3 at 5 mV s −1 ), with a wide voltage window of 1.25 V and high rate capability (72% between 5 and 500 mV s −1 ). As strain sensors, MXene/PU yarns demonstrate a wide sensing range (60% under cyclic stretching), high sensitivity (gauge factor of ≈17 in the range of 20–50% strain), and low drift. Utilizing the stretchability of polymer nanofibers and the electrical and electrochemical properties of MXene, MXene‐based nanoyarns demonstrate potential in a wide range of applications, including stretchable electronics and body movement monitoring.
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