Polarization-controlled PVDF-based hybrid nanogenerator for an effective vibrational energy harvesting from human foot

被引：76

作者：

Lee, Dong Woo ^{[1
]}

Jeong, Dong Geun ^{[1
]}

Kim, Jong Hun ^{[2
,3
]}

Kim, Hyun Soo ^{[1
,6
]}

Murillo, Gonzalo ^{[7
]}

Lee, Gwan-Hyoung ^{[2
,3
,4
,5
]}

Song, Hyun-Cheol ^{[6
]}

Jung, Jong Hoon ^{[1
]}

机构：

[1] Inha Univ, Dept Phys, Incheon 22212, South Korea

[2] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea

[3] Seoul Natl Univ, Res Inst Adv Mat RIAM, Seoul 08826, South Korea

[4] Seoul Natl Univ, Inst Engn Res, Seoul 08826, South Korea

[5] Seoul Natl Univ, Inst Appl Phys, Seoul 08826, South Korea

[6] Korea Inst Sci & Technol KIST, Ctr Elect Mat, Seoul 02792, South Korea

[7] CSIC, Dept Nano & Microsyst, Inst Microelect Barcelona IMB CNM, Bellaterra 08193, Spain

来源：

NANO ENERGY | 2020年 / 76卷

基金：

新加坡国家研究基金会;

关键词：

PVDF; Hybrid nanogenerator; Human foot; Shoe insole; Wireless pressure sensor network; TRIBOELECTRIC NANOGENERATOR; HUMAN-BODY; DEVICES;

D O I：

10.1016/j.nanoen.2020.105066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effective conversion of vibrational energy from the motion of human body into electricity has been considered as one of the most promising technologies for charging portable electronic devices. Here, we report an electric polarization-controlled PVDF-based hybrid triboelectric-piezoelectric nanogenerator (TP-NG) as for an effective energy harvesting of various mechanical vibrations from human foot. The hybrid TP-NG simply consists of PVDF, Al, and acrylic, and the triboelectric NG component is vertically stacked on the piezoelectric NG component. We observed the strong electric-polarization-dependent electric power due to the modulated surface potential and negative piezoelectricity of PVDF. We also observed the in-phase power generation due to the vertical stacking of two flat NGs, irrespective of various loading rate, contact time, force, and frequency. Three hybrid TP-NGs were embedded at the forefoot, arch, and heel positions in a shoe insole. During normal walking, the shoe insole generated sufficient power to operate light-emitting diodes, which could be used in lightning at night. In addition, the insole operated a wireless pressure network, which could be used in monitoring and transmitting the pressure distribution on the foot to a cellular phone. This work provides an important step in the harvesting of random and irregular vibrational energy from the human foot, and in the realization of self powered lightning for safety and self-powered wireless pressure monitoring system for diagnostic healthcare.

引用

页数：9

共 31 条

[1] Dipole-moment-induced effect on contact electrification for triboelectric nanogenerators [J].