Molecularly Engineered Surface Triboelectric Nanogenerator by Self-Assembled Monolayers (METS)

Giyoung Song, Younghoon Kim, Seunggun Yu, Min Ook Kim, Sang Hee Park, Suk Man Cho, Dhinesh Babu Velusamy, Sung Hwan Cho, Kang Lib Kim, Jongbaeg Kim, Eunkyoung Kim, Cheolmin Park

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Self-powered energy harvesters utilizing triboelectric effect and electrostatic induction have been widely studied, leading in the materials viewpoint to numerous material pairs for facile charge separation upon repetitive contacts with elaborate topological structures. Here, we present a simple but robust triboelectric platform based on a molecularly engineered surface triboelectric nanogenerator by self-assembled monolayers (METS). Triboelectric surface charge density of a substrate was readily controlled by the variation of end-functional groups of self-assembled monolayers (SAMs). In particular, by employing fluorine terminated SAMs, we are able to develop a METS with the maximum open circuit voltage and short circuit current of 105 V and 27 μA, respectively, under relatively gentle mechanical contacts with the 3N vertical force at 1.25 Hz. The power density of the device was 1.8 W/m2 at the load resistance of 10 MΩ more than 60 times greater than that of an unmodified dielectric/Al device. Moreover, our approach with SAMs was extended to various types of surfaces including fabrics of silk, cotton, and poly(ethylene terephthalate) (PET) and a PET film, and the results of single-friction-surface triboelectric nanogenerators with these materials offers a facile and universal guideline for designing triboelectic materials.

Original languageEnglish
Pages (from-to)4749-4755
Number of pages7
JournalChemistry of Materials
Volume27
Issue number13
DOIs
Publication statusPublished - 2015 Jul 14

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Song, G., Kim, Y., Yu, S., Kim, M. O., Park, S. H., Cho, S. M., Velusamy, D. B., Cho, S. H., Kim, K. L., Kim, J., Kim, E., & Park, C. (2015). Molecularly Engineered Surface Triboelectric Nanogenerator by Self-Assembled Monolayers (METS). Chemistry of Materials, 27(13), 4749-4755. https://doi.org/10.1021/acs.chemmater.5b01507