Wearable Device Oriented Flexible and Stretchable Energy Harvester Based on Embedded Liquid-Metal Electrodes and FEP Electret Film

被引：15
作者：
Xie, Jianbing [1 ]
Wang, Yiwei [1 ]
Dong, Rong [2 ]
Tao, Kai [1 ]
机构：
[1] Northwestern Polytech Univ, Minist Educ, Key Lab Micro Nano Syst Aerosp, Xian 710072, Peoples R China
[2] Xian Technol Univ, Sch Mechatron Engn, Xian 710021, Peoples R China
来源：
SENSORS | 2020年 / 20卷 / 02期
基金：
中国国家自然科学基金;
关键词：
flexible and stretchable electronics; energy harvester; liquid-metal; wearable device; electret; STRAIN SENSOR; CONDUCTORS; FIBERS;
D O I：
10.3390/s20020458
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this paper, a flexible and stretchable energy harvester based on liquid-metal and fluorinated ethylene propylene (FEP) electret films is proposed and implemented for the application of wearable devices. A gallium liquid-metal alloy with a melting point of 25.0 degrees C is used to form the stretchable electrode; therefore, the inducted energy harvester will have excellent flexibility and stretchability. The solid-state electrode is wrapped in a dragon-skin silicone rubber shell and then bonded with FEP electret film and conductive film to form a flexible and stretchable energy harvester. Then, the open-circuit voltage of the designed energy harvester is tested and analyzed. Finally, the fabricated energy harvester is mounted on the elbow of a human body to harvest the energy produced by the bending of the elbow. The experimental results show that the flexible and stretchable energy harvester can adapt well to elbow bending and convert elbow motion into electric energy to light the LED in a wearable watch.
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页数：11
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