Yang Jia, Yu Xianqiang, Sun Xiangbin, Kang Qiong, Zhu Lin, Qin Gang, Zhou Aiguo, Sun Gengzhi, Chen Qiang
School of Materials Science and Engineering , Henan Polytechnic University , Jiaozuo 454003 , China.
Institute of Advanced Materials (IAM) , Nanjing Tech University , Nanjing 211816 , China.
ACS Appl Mater Interfaces. 2020 Feb 26;12(8):9736-9745. doi: 10.1021/acsami.9b20573. Epub 2020 Feb 17.
It is a challenge to realize high strength, toughness, and energy storage, as well as excellent capacitive self-recovery, fatigue-resistant, and self-healing performances simultaneously in a single all-in-one supercapacitor aiming for wearable electronics. Herein, based on the self-crosslinking and molecular template, a supramolecular poly(vinyl alcohol)/poly (-hydroxyethyl acrylamide) (PVA/PHEA) hydrogel electrolyte (HGE) decorated by polyaniline (PANI) was prepared by in situ rapid polymerization of high-concentration aniline on the PVA/PHEA gel containing HSO. The multiple hydrogen bonds, rapid polymerization, and decoration endowed PANI-decorated PVA/PHEA HGE-based all-in-one flexible supercapacitor with the integrated high performances, which include high specific capacitance, good cycling stability, high strength, excellent toughness, rapid self-recovery, excellent fatigue-resistant, and self-healing capabilities, as well as high capacitance retention during or after the large deformations or after the self-healing. Thus, the current work presents a novel and promising strategy to design the integrated high-performance supercapacitors aiming for wearable electronics.
对于旨在用于可穿戴电子产品的一体式超级电容器而言，要同时实现高强度、高韧性、高储能以及优异的电容自恢复、抗疲劳和自愈性能是一项挑战。在此，基于自交联和分子模板，通过在含有HSO的PVA/PHEA凝胶上原位快速聚合高浓度苯胺，制备了一种由聚苯胺（PANI）修饰的超分子聚乙烯醇/聚（-羟乙基丙烯酰胺）（PVA/PHEA）水凝胶电解质（HGE）。多重氢键、快速聚合和修饰赋予了基于PANI修饰的PVA/PHEA HGE的一体式柔性超级电容器集成的高性能，包括高比电容、良好的循环稳定性、高强度、优异的韧性、快速自恢复、优异的抗疲劳和自愈能力，以及在大变形期间或之后、自愈之后的高电容保持率。因此，当前的工作提出了一种新颖且有前景的策略，用于设计旨在用于可穿戴电子产品的集成高性能超级电容器。
