Noncontact Free-Rotating Disk Triboelectric Nanogenerator as a Sustainable Energy Harvester and Self-Powered Mechanical Sensor

被引:227
作者
Lin, Long [1 ]
Wang, Sihong [1 ]
Niu, Simiao [1 ]
Liu, Chang [1 ]
Xie, Yannan [1 ]
Wang, Zhong Lin [1 ,2 ]
机构
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[2] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
关键词
triboelectric nanogenerator; noncontact; rotational mechanical energy; self-powered system; high stability; active sensor; CONTACT ELECTRIFICATION; ACTIVE SENSOR; GENERATOR; SEPARATION; EFFICIENCY; CONVERSION; ELECTRETS; SYSTEMS; CHARGE; FILMS;
D O I
10.1021/am405637s
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, we introduced an innovative noncontact, free-rotating disk triboelectric nanogenerator (FRD-TENG) for sustainably scavenging the mechanical energy from rotary motions. Its working principle was clarified through numerical calculations of the relative-rotation-induced potential difference, which serves as the driving force for the electricity generation. The unique characteristic of the FRD-TENG enables its high output performance compared to its working at the contact mode, with an effective output power density of 1.22 W/m(2) for continuously driving 100 light-emitting diodes. Ultrahigh stability of the output and exceptional durability of the device structure. were achieved, and the reliable output was utilized for fast/effective charging of a lithium ion battery. Based on the relationship between its output performance and the parameters of the mechanical stimuli, the FRD-TENG could be employed as a self-powered mechanical sensor, for simultaneously detecting the vertical displacement and rotation speed. The FRD-TENG has superior advantages over the existing disk triboelectric nanogenerator, and exhibits significant progress toward practical applications of nanogenerators for both energy harvesting and self-powered sensor networks.
引用
收藏
页码:3031 / 3038
页数:8
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