Instantaneous peak 2.1 W-level hybrid energy harvesting from human motions for self-charging battery-powered electronics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

13 Scopus Citations
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Author(s)

  • Zhongjie Li
  • Jun Luo
  • Shaorong Xie
  • Liming Xin
  • Hengyu Guo
  • Huayan Pu
  • Peilun Yin
  • Zhibing Xu
  • Dong Zhang
  • Yan Peng
  • Hani Naguib

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number105629
Journal / PublicationNano Energy
Volume81
Online published23 Nov 2020
Publication statusPublished - Mar 2021

Abstract

In this article, we report a wearable millimeter-size energy generator that yields instantaneous power of 2.1 W level from kinetic energy of human running motions. The generator, with a hybridization of piezoelectric and electromagnetic transductions, integrates mainly two major novel techniques: impact induced frequency up conversion effect for the piezoelectric generation and abrupt magnetic flux density change for the electromagnetic generation. The generator proves to be able to effectively harness energy from human motions, producing a power density over one order of magnitude higher than that of state-of-the-art work. This result is further validated by the charging performance, i.e. high charging rate and voltage into mF-level capacitors. Moreover, this wearable generator demonstrates the capability to charge a Li-on battery in dozens of minutes. This work can be of much significance for the development of self-charging battery powered wearable electronic devices.

Research Area(s)

  • Electromagnetic transduction, High performance, Human-motion energy harvesting, Piezoelectric stack, Self-powered wearable electronics

Citation Format(s)

Instantaneous peak 2.1 W-level hybrid energy harvesting from human motions for self-charging battery-powered electronics. / Li, Zhongjie; Luo, Jun; Xie, Shaorong; Xin, Liming; Guo, Hengyu; Pu, Huayan; Yin, Peilun; Xu, Zhibing; Zhang, Dong; Peng, Yan; Yang, Zhengbao; Naguib, Hani.

In: Nano Energy, Vol. 81, 105629, 03.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review