Superstretchable electrode based on hierarchical assembly of triblock copolymer fiber membrane
Superstretchable electrode based on hierarchical assembly of triblock copolymer fiber membrane
复制标题
基于三嵌段共聚物纤维膜分级组装的超拉伸电极
DOI：
10.1016/j.cej.2021.132911
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发表时间：
2021-10
影响因子：
15.1
通讯作者：
Xiaoyan Li
中科院分区：
文献类型：
--
作者：
Ming Zhu;Tao Yang;Liting Wang;Mengyuan Xiong;Wenjun He;Yaowei Chen;Weili Deng;Xiaoyan Li
可伸缩电子由于其类似于组织的机械弹性而引起了人们的极大兴趣。本文基于电纺聚(苯乙烯-乙烯/丁烯-苯乙烯)(SEBS)、碳纳米管(CNTs)和电聚合聚苯胺(PANI)的逐步组装，设计了一种超伸缩纤维膜。所制备的软膜具有层次化的微纳结构，与三嵌段共聚物纤维形成良好的界面，表现出良好的机电性能。膜的电导率约为2.4 S·cm−1，拉伸强度和最大拉伸应变分别可达8.2兆帕和1200%，而杨氏模数仅为0.26兆帕左右。制备的复合膜经1000次循环后导电性保持稳定，断裂的复合膜可通过热压愈合。此外，这种可伸缩的复合膜已经成功地被证明可以检测各种人体运动，甚至可以在水下工作。我们的结果为实现稳定的大应变软可伸缩电子器件提供了一种简单、可控的方法，在人体运动监测方面具有广阔的应用前景。
Stretchable electronics have attracted great interest due to their mechanical flexibility similar to tissues. In this paper, a superstretchable fiber membrane is designed based on step by step assembly of electrospun poly(styrene-ethylene/butylene-styrene) (SEBS), carbon nanotubes (CNTs) and electropolymerized polyaniline (PANi). The prepared soft membrane has a hierarchical micro-nano structure, forms a good interface with the triblock copolymer fiber, and shows good electromechanical performance. The electrical conductivity of the membrane is about 2.40 S·cm−1, the tensile strength and the maximum tensile strain can reach 8.2 MPa and 1200% respectively, while the Young’s modulus is only about 0.26 MPa. The conductivity of the prepared membrane remains stable after 1000 cycles, and the fractured composite membrane can be healed by hot pressing. In addition, this stretchable composite membrane has been successfully demonstrated to detect various human motions, and can even work underwater. Our results provide a simple and controllable method to achieve the stable soft stretchable electronics with large strain, and demonstrate promising potential in the expanded application of human motion monitoring.
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