Triboelectric Nanogenerators Made of Porous Polyamide Nanofiber Mats and Polyimide Aerogel Film: Output Optimization and Performance in Circuits

Hao Yang Mi, Xin Jing, Mary Ann B. Meador, Haiquan Guo, Lih Sheng Turng*, Shaoqin Gong

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

104 Scopus citations

Abstract

Triboelectric nanogenerators (TENGs) have been attracting a tremendous amount of attention since their discovery in 2012. Finding new means to enhance energy output is an ongoing pursuit. Herein, we introduce a new type of high-performance TENG composed of highly porous polyamide (PA) nanofiber mats and polyimide aerogel films. We have demonstrated that the thickness of the porous triboelectric materials, which is attained by stacking multiple layers of triboelectric materials, has a profound effect on the triboelectric output performance of TENGs. The triboelectric output increased when PA increased from one layer to six layers. However, it decreased when PA was further increased to 12 layers. With an optimum material thickness, a TENG with only a 2 cm2 effective device size achieved a high output voltage of 115 V and a current of 9.5 μA under a small compressive pressure (30 kPa). A peak power density of 1.84 W/m2 was achieved on a 4.7 Mω external load. The TENG was able to light 60 light-emitting diodes easily and quickly charge capacitors with different capacitance to 6 V, indicating an outstanding energy harvesting ability. In addition, the performance of multiple TENGs connected in different ways, as well as the performance of TENGs in resistive/inductive/capacitive circuits, were investigated. These findings provide new insight into the working principles of TENGs in complex circuits.

Original languageEnglish
Pages (from-to)30596-30606
Number of pages11
JournalACS Applied Materials and Interfaces
Volume10
Issue number36
DOIs
StatePublished - 12 09 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

Keywords

  • highly porous
  • output optimization
  • polyamide
  • polyimide
  • triboelectric nanogenerator

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