A high-power wearable triboelectric nanogenerator prepared from self-assembled electrospun poly(vinylidene fluoride) fibers with a heart-like structure

Jia Han Zhang, Yong Li, Jinhua Du, Xihong Hao, Haitao Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

31 Citations (Scopus)

Abstract

Triboelectric nanogenerators (TENGs) have received much attention due to their potential application in driving portable electronics. Despite the fast development of this technology, improving their performances in a simple manner still remains a great challenge. In this work, a heart-like micro-nanofiber based wearable triboelectric nanogenerator (HMN-TENG) with high performances is demonstrated. The three-dimensional (3D) secondary heart-like structure is designed and self-assembled on an electrospun poly(vinylidene fluoride) (PVDF) fiber based tribonegative layer, and this structure can match the depressed porous and ravine-like structures on the tribopositive layer. The HMN-TENG delivers the voltage, current density and power density outputs of up to 1063 V, 97 mA m-2 and 14.8 W m-2, respectively. The high outputs stem from the joint effect between the heart-like structure and the porous structure, which enlarges the effective contact area via their high surface roughness and the "occlusion effect". Furthermore, the practicability of the HMN-TENG is verified by driving 595 light-emitting diodes (LEDs), a scientific calculator and a timer. The washability is proved by comparing its voltages before and after washing ten times as well as soaking in water for a week. The design offers a solution for performance enhancement of wearable TENGs, and the approach presents a simple and cost-effective technology.

Original languageEnglish
Pages (from-to)11724-11733
Number of pages10
JournalJournal of Materials Chemistry A
Volume7
Issue number19
DOIs
Publication statusPublished - 21 May 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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