An Antifatigue Liquid Metal Composite Electrode Ionic Polymer-Metal Composite Artificial Muscle with Excellent Electromechanical Properties

被引:23
|
作者
He, Zhihao [1 ,2 ,3 ]
Jiao, Shasha [1 ,2 ]
Wang, Zhengping [1 ,2 ]
Wang, Yifan [1 ,2 ]
Yang, Mengyu [1 ,2 ]
Zhang, Ye [1 ,2 ]
Liu, Yiwei [1 ,2 ]
Wu, Yuanzhao [1 ,2 ]
Shang, Jie [1 ,2 ]
Chen, Qingming [3 ]
Li, Run-Wei [4 ]
机构
[1] Chinese Acad Sci, CAS Key Lab Magnet Mat & Devices, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China
[2] Chinese Acad Sci, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China
[3] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China
[4] Univ Chinese Acad Sci, Coll Mat Sci & Opto Elect Technol, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
liquid metal; eutectic gallium-indium; antifatigue; ionic polymer metal composites; driving force; tip displacement; IPMC; ACTUATORS; PERFORMANCE; MODEL; SOFT;
D O I
10.1021/acsami.2c01453
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Ionic polymer-metal composites (IPMC), one of the most popular materials in the field of artificial muscle research, have attracted much attention because of their high flexibility, low drive voltage (<10 V), high force density, large deformation, and so forth. However, the results show that the serious electrode fatigue crack and water loss of traditional IPNIC greatly decrease its fatigue life and limit the practical application. In this study, we developed a novel liquid metal composite electrode. A layer of eutectic gallium-indium alloy (EGaIn) liquid metal was applied to the surface of the platinum electrode of the IPMC using a mask. Because of the good self-healing performance of the liquid metal, it is expected to solve the above problems of resistance increase and water loss caused by cracks. It turns out that the prepared EGaIn/Pt-IPMC exhibits a driving force up to 120 mN and maximum fatigue life of about 25,000 s at a driving voltage of 3 V. Compared with the best work reported, the fatigue strength of EGaIn/Pt-IPMC was increased by about 210%, and the maximum driving force of EGaIn/Pt-IPMC prepared by a single-layer basement membrane was between the IPMC prepared by 4-6 layer basement membrane. The electromechanical properties were significantly improved, and it is expected to realize a series of bionic applications.
引用
收藏
页码:14630 / 14639
页数:10
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