A Simple and Effective Physical Ball-Milling Strategy to Prepare Super-Tough and Stretchable PVA@MXene@PPy Hydrogel for Flexible Capacitive Electronics

被引：38

作者：

Qin, Zipeng ^{[1
]}

Zhao, Gang ^{[1
]}

Zhang, Yaoyang ^{[1
]}

Gu, Zhiheng ^{[1
]}

Tang, Yuhan ^{[1
]}

Aladejana, John Tosin ^{[2
]}

Ren, Junna ^{[3
]}

Jiang, Yunhong ^{[4
]}

Guo, Zhanhu ^{[4
]}

Peng, Xiangfang ^{[1
]}

Zhang, Xuehua ^{[5
]}

Xu, Ben Bin ^{[4
]}

Chen, Tingjie ^{[1
]}

机构：

[1] Fujian Univ Technol, Coll Mat Sci & Engn, Key Lab Polymer Mat & Prod Univ Fujian, Fuzhou 350002, Fujian, Peoples R China

[2] Nanjing Forestry Univ Nanjing, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Jiangsu 210037, Peoples R China

[3] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[4] Northumbria Univ, Fac Engn & Environm, Smart Mat & Surfaces Lab, Newcastle Upon Tyne NE1 8ST, England

[5] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada

来源：

SMALL | 2023年 / 19卷 / 45期

基金：

加拿大自然科学与工程研究理事会; 英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

ball-milling; capacitive strain sensors; MXene; polypyrrole; polyvinyl alcohol hydrogel; stretchability; STRAIN; SENSORS;

D O I：

10.1002/smll.202303038

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Biomimetic flexible electronics for E-skin have received increasing attention, due to their ability to sense various movements. However, the development of smart skin-mimic material remains a challenge. Here, a simple and effective approach is reported to fabricate super-tough, stretchable, and self-healing conductive hydrogel consisting of polyvinyl alcohol (PVA), Ti3C2Tx MXene nanosheets, and polypyrrole (PPy) (PMP hydrogel). The MXene nanosheets and Fe3+ serve as multifunctional cross-linkers and effective stress transfer centers, to facilitate a considerable high conductivity, super toughness, and ultra-high stretchability (elongation up to 4300%) for the PMP hydrogel with. The hydrogels also exhibit rapid self-healing and repeatable self-adhesive capacity because of the presence of dynamic borate ester bond. The flexible capacitive strain sensor made by PMP hydrogel shows a relatively broad range of strain sensing (up to 400%), with a self-healing feature. The sensor can precisely monitor various human physiological signals, including joint movements, facial expressions, and pulse waves. The PMP hydrogel-based supercapacitor is demonstrated with a high capacitance retention of & AP;92.83% and a coulombic efficiency of & AP;100%.

引用

页数：12