Liquid metal @ mxene spring supports ionic gel with excellent mechanical properties for high-sensitivity wearable strain sensor

被引：31

作者：

Dong, Lisong ^{[1
]}

Zhou, Xiaoyao ^{[1
]}

Zheng, Shuxin ^{[1
]}

Luo, Zhongfan ^{[1
]}

Nie, Yuxiang ^{[1
]}

Feng, Xin ^{[1
]}

Zhu, Jiahua ^{[1
]}

Wang, Zhangzhong ^{[2
]}

Lu, Xiaohua ^{[1
]}

Mu, Liwen ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Inst Technol, Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 458卷

基金：

瑞典研究理事会; 中国国家自然科学基金;

关键词：

Liquid metal; MXene; Ionic gel; Mechanical properties; High-sensitivity; Strain sensor; DOUBLE-NETWORK HYDROGELS; LOW-HYSTERESIS; PERFORMANCE; SURFACE; ELECTRODES; ADHESIVE; TOUGH;

D O I：

10.1016/j.cej.2023.141370

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Conductive ionic gels are considered as potential flexible sensing materials owing to their softness and biocompatibility. Nevertheless, pure ionic gels typically exhibit poor mechanical properties and low sensitivity. In this study, MXene and liquid metal (LM) are introduced for self-assembly to form a spring structure. The enhanced effect of the van der Waals force synergy between the two fillers increases the tensile resistance (925 %, 1091.5 kPa), compression resistance (75 %, 2534.3 kPa) and self-healing (similar to 90 % recovery) efficiency of the ionic gel. In addition, the conductive paths based on double fillers are greatly destroyed during the straining process, and show a very high gauge factor (15.47) because of their unique spring structure and weak viscous force between them. This study provides a new approach for the preparation of highly sensitive sensing materials for human body monitoring and applications in other domains.

引用

页数：11

共 92 条

[1] Liquid Metal-Ionic Liquid Composite Gels for Soft, Mixed Electronic-Ionic Conductors [J].