A shape-adaptive thin-film-based approach for 50% high-efficiency energy generation through micro-grating sliding electrification

Guang Zhu, Yu Sheng Zhou, Peng Bai, Xian Song Meng, Qingshen Jing, Jun Chen, Zhong Lin Wang

Research output: Journal PublicationArticlepeer-review

328 Citations (Scopus)

Abstract

Effectively harvesting ambient mechanical energy is the key for realizing self-powered and autonomous electronics, which addresses limitations of batteries and thus has tremendous applications in sensor networks, wireless devices, and wearable/implantable electronics, etc. Here, a thin-film-based micro-grating triboelectric nanogenerator (MG-TENG) is developed for high-efficiency power generation through conversion of mechanical energy. The shape-adaptive MG-TENG relies on sliding electrification between complementary micro-sized arrays of linear grating, which offers a unique and straightforward solution in harnessing energy from relative sliding motion between surfaces. Operating at a sliding velocity of 10 m/s, a MG-TENG of 60 cm2 in overall area, 0.2 cm3 in volume and 0.6 g in weight can deliver an average output power of 3 W (power density of 50 mW cm-2 and 15 W cm-3) at an overall conversion efficiency of ∼50%, making it a sufficient power supply to regular electronics, such as light bulbs. The scalable and cost-effective MG-TENG is practically applicable in not only harvesting various mechanical motions but also possibly power generation at a large scale. A thin-film-based micro-grating triboelectric nanogenerator (MG-TENG) is developed for conversion of mechanical energy at an efficiency of 50%. The MG-TENG generates a power density of 50 mW/cm2 and 15 W/cm3, making it a sufficient power supply to regular electronics, such as light bulbs. The scalable and cost-effective MG-TENG is practically applicable in not only harvesting various mechanical motions but also possibly power generation at a large scale.

Original languageEnglish
Pages (from-to)3788-3796
Number of pages9
JournalAdvanced Materials
Volume26
Issue number23
DOIs
Publication statusPublished - 18 Jun 2014
Externally publishedYes

Keywords

  • energy conversion
  • energy generation
  • self-powered
  • triboelectric effect

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering

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