Optimizing the efficiency of triboelectric nanogenerators by surface nanoarchitectonics of graphene-based electrodes: A review

Deepak Deepak, Navneet Soin, Susanta Sinha Roy

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
20 Downloads (Pure)

Abstract

Since the discovery of triboelectric nanogenerators (TENGs), a significant body of research work has been undertaken for the modification of material properties to enhance their efficiency. These efforts have focused on judicious materials choice (large differences in work functions), enhanced charge-exchange density via hybridization (plasmonic, photo-enhancement, piezoelectric effect), enhanced contact area via nanostructuring and new device architectures. Whilst these efforts have led to a significant increase in the power density, but the rudimentary choice of metal electrode selection and subsequent charge transfer mechanism still demand attention. As such, low-dimensional carbon nanomaterials and in particular, graphene and its derivatives have been explored in the literature to overcome some of the drawbacks of the conventional metallic electrodes including fatigue and corrosion, especially in high humidity environments. Graphene with its exceptionally high surface area, high electrical conductivity and flexibility make itself an excellent material for enabling wearable electronics. In this review, we discuss the impact of graphene, graphene-based composite electrodes, doped graphene electrodes and laser-induced graphene (LIG) electrodes to improve the performance of TENGs. Also, the basic mechanism of charge transfer between different electrodes of the TENG device has been explained. Among all graphene-based electrodes for TENG, laser-induced graphene electrodes show excellent performance owing to output power density 240 times higher than that of pristine graphene and 120 times more than graphene-based composite electrodes. Such use of functionalized graphene electrodes establishes the new steps towards the realization of flexible and transparent triboelectric nanogenerators.
Original languageEnglish
Article number105412
Pages (from-to)1-17
Number of pages17
JournalMaterials Today Communications
Early online date14 Jan 2023
DOIs
Publication statusPublished online - 14 Jan 2023

Bibliographical note

Funding Information:
Deepak Deepak acknowledges the financial support from Shiv Nadar Institution of Eminence, India through the scholarship.

Funding Information:
Deepak Deepak acknowledges the financial support from Shiv Nadar Institution of Eminence , India through the scholarship.

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Graphene electrodes
  • Triboelectric nonogenerators
  • Laser-induced graphene
  • Triboelectric nanogenerators
  • Laser-Induced graphene

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