Interfacial Laser-Induced Graphene Enabling High-Performance Liquid−Solid Triboelectric Nanogenerator

Yun Chen, Bin Xie, Junyu Long, Yicheng Kuang, Xin Chen, Maoxiang Hou, Jian Gao, Shuang Zhou, Bi Fan, Yunbo He, Yuan Ting Zhang, Ching Ping Wong, Zuankai Wang, Ni Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

54 Citations (Scopus)

Abstract

Laser-induced graphene (LIG) has emerged as a promising and versatile method for high-throughput graphene patterning; however, its full potential in creating complex structures and devices for practical applications is yet to be explored. In this study, an in-situ growing LIG process that enables to pattern superhydrophobic fluorine-doped graphene on fluorinated ethylene propylene (FEP)-coated polyimide (PI) is demonstrated. This method leverages on distinct spectral responses of FEP and PI during laser excitation to generate the environment preferentially for LIG formation, eliminating the need for multistep processes and specific atmospheres. The structured and water-repellant structures rendered by the spectral-tuned interfacial LIG process are suitable as the electrode for the construction of a flexible droplet-based electricity generator (DEG), which exhibits high power conversion efficiency, generating a peak power density of 47.5 W m−2 from the impact of a water droplet 105 µL from a height of 25 cm. Importantly, the device exhibits superior cyclability and operational stability under high humidity and various pH conditions. The facile process developed can be extended to realize various functional devices.

Original languageEnglish
Article number2104290
JournalAdvanced Materials
Volume33
Issue number44
DOIs
Publication statusPublished - 2 Nov 2021
Externally publishedYes

Keywords

  • droplet-based electricity generator
  • fluorine-doped graphene
  • high power density
  • laser-induced graphene
  • triboelectric nanogenerator

ASJC Scopus subject areas

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

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