Surface-modified liquid metal nanocapsules derived multiple triboelectric composites for efficient energy harvesting and wearable self-powered sensing

Zihua LI, Bingang XU, Jing HAN, Di TAN, Junxian HUANG, Yuanyuan GAO, Hong FU

Research output: Contribution to journalArticlespeer-review

14 Citations (Scopus)

Abstract

Liquid metal (LM) has been widely used as flexible electrodes for triboelectric nanogenerators (TENGs). However, the development of high-performance triboelectric composites based on LM droplets is still challenging due to the mismatched surface tension. Here, copolymer surface-modified LM nanocapsules (CPLM NCs) with core–shell structure are successfully synthesized via two-step method containing chelation reaction and in situ free-radical polymerization. The as-synthesized NCs can be incorporated into various polymers to fabricate diverse flexible polymer/NCs nanocomposites. Based on surface engineering, CPLM will not leak and drop off from nanocomposites when they suffer severe deformations, exhibiting good interfacial compatibility and robust mechanical properties. The introduction of NCs can improve the charge storage capability and electric outputs of various nanocomposites owing to more interfacial polarization sites, showing a versatile strategy for manufacturing high-powered triboelectric composites. The optimized polydimethylsiloxane/NCs-based TENG (PDMS/NCs-TENG) delivers a significant enhancement of power density by 28.3-fold and can availably power wearable electronics. PDMS/NCs-TENG can be also developed as a wearable self-powered sensor to detect physiological signals and joint-related motions in a real-time, rapid, and noninvasive way. This work not only renders a versatile strategy for the development of high-performance triboelectric materials but also provides a sustainable energy solution for wearable electronics. Copyright © 2023 Elsevier B.V. All rights reserved.

Original languageEnglish
Article number141737
JournalChemical Engineering Journal
Volume460
Early online dateFeb 2023
DOIs
Publication statusPublished - Mar 2023

Citation

Li, Z., Xu, B., Han, J., Tan, D., Huang, J., Gao, Y., & Fu, H. (2023). Surface-modified liquid metal nanocapsules derived multiple triboelectric composites for efficient energy harvesting and wearable self-powered sensing. Chemical Engineering Journal, 460. Retrieved from https://doi.org/10.1016/j.cej.2023.141737

Keywords

  • Liquid metal
  • Nanocapsule
  • Nanocomposite
  • Triboelectric nanogenerator
  • Self-powered sensor

Fingerprint

Dive into the research topics of 'Surface-modified liquid metal nanocapsules derived multiple triboelectric composites for efficient energy harvesting and wearable self-powered sensing'. Together they form a unique fingerprint.