Self-Powered Fine Dust Filtration Using Triboelectrification-Induced Electric Field

Young Jun Kim, Hyoung Taek Kim, Jeong Hwan Lee, In Yong Suh, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review


Particulate matter (PM) in the environment can adversely affect the health of living things. However, high removal efficiency and low-pressure loss are crucial design challenges for any air filtration system. To circumvent the challenge, here, we demonstrate a novel triboelectric (TE) air filtration system that is based on a rotation-type triboelectric nanogenerator (TENG) and a filter comprising two sets of plates: primary and secondary, that are placed in the airflow channel. When the TENG charges the two plate sets with opposite charges, the flowing air particles are charged at the primary plates and are collected, due to an electric field, at the secondary plates. The TE filter has demonstrated a PM2.5 removal efficiency of ~ 99.97% for the fine dust particles, and it remains stable even after several washing cycles. The pressure loss is almost two orders less than the high-efficiency particulate air filter. Since the airflow itself can drive the TENG, the TE filter can potentially be integrated with any air conditioning system for fine dust filtration in offices, automobiles, etc.

Original languageEnglish
Article number128
JournalNanoscale Research Letters
Issue number1
Publication statusPublished - 2022

Bibliographical note

Funding Information:
This work was supported by SKKU Excellence in Research Award Research Fund, Sungkyunkwan University, 2021.

Publisher Copyright:
© 2022, The Author(s).

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


Dive into the research topics of 'Self-Powered Fine Dust Filtration Using Triboelectrification-Induced Electric Field'. Together they form a unique fingerprint.

Cite this