Inductor-Free Wireless Energy Delivery via Maxwell's Displacement Current from an Electrodeless Triboelectric Nanogenerator

被引：149
作者：
Cao, Xia [1 ,2 ]
Zhang, Meng [1 ]
Huang, Jinrong [1 ]
Jiang, Tao [1 ]
Zou, Jingdian [1 ]
Wang, Ning [3 ,4 ]
Wang, Zhong Lin [1 ,4 ,5 ]
机构：
[1] Univ Chinese Acad Sci, Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Res Ctr Bioengn & Sensing Technol, Beijing Key Lab Bioengn & Sensing Technol, Sch Chem & Biol Engn, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, Ctr Green Innovat, Sch Math & Phys, Beijing 100083, Peoples R China
[4] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[5] Natl Ctr Nanosci & Technol NCNST, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China
来源：
ADVANCED MATERIALS | 2018年 / 30卷 / 06期
基金：
中国国家自然科学基金;
关键词：
displacement current; triboelectric nanogenerators; wearable devices; wireless energy delivery; POWER TRANSFER; NETWORKS;
D O I：
10.1002/adma.201704077
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure. Due to the leakage of electric field between the segments during relative rotation, the generated Maxwell's displacement current in free space is collected by metal collectors. At a gap distance of 3 cm, the output wireless current density and voltage can reach 7 mu A cm(-2) and 65 V, respectively. A larger rotary electrodeless TENG and flexible wearable electrodeless TENG are demonstrated to power light-emitting diodes (LEDs) through wireless energy delivery. This innovative discovery opens a new avenue for noncontact, wireless energy transmission for applications in portable and wearable electronics.
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页数：8
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