Metal-free, flexible triboelectric generator based on MWCNT mesh film and PDMS layers

Hayoung Hwang, Kang Yeol Lee, Dongjoon Shin, Jungho Shin, Sangtae Kim, Wonjoon Choi

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We demonstrate a metal-free triboelectric energy harvester consisted of MWCNT mesh film and PDMS layer. Upon touch from a finger, the single electrode-mode energy harvester generates up to 27.0 W/m2 output power at 10 MΩ matched impedance. The device generates stable power upon touch by bare fingers or gloved fingers. Using copper counter electrode results in decreased power output, due to the weaker tendency in triboelectrification. The power output also scales with the pressure applied by the finger. The intertwined, condensed MWCNT network acts as a flexible yet effective current collector, with resistance across the device less than 10 Ω. This current collector possesses strong corrosion resistance and stability against potential oxidation, while its metal counterpart may undergo oxidation over extended exposure to air or frequent fracture upon straining. The flexible device form may be applied to various curved or irregular surfaces that undergo frequent human touches.

Original languageEnglish
Pages (from-to)693-699
Number of pages7
JournalApplied Surface Science
Publication statusPublished - 2018 Jun 1


  • Carbon nanotube mesh
  • Finger energy harvesting
  • Metal-free generator
  • Surface polarization
  • Triboelectric nanogenerator

ASJC Scopus subject areas

  • Surfaces, Coatings and Films


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