Issue 9, 2023

A self-assembled molecularly triboelectronegative cellulose nanofiber material with ultrahigh contact triboelectrification for the design of green triboelectric nanogenerators

Abstract

The research and development of bio-based electronegative tribolayers will accelerate the further application of green triboelectric nanogenerators (G-TENGs), which is beneficial to alleviate the environmental pollution caused by the non-recyclability of traditional TENGs. Herein, we prepared a cellulose nanofiber (CNF) based triboelectronegative tribolayer material with ultrahigh triboelectric charge density, which is obtained by molecular self-assembly of 3-(triethoxysilyl) propionitrile (TESPN) on the surface of a CNF film. Due to the strong electron-withdrawing effect of cyano-groups, the modified CNF film tends to gain electrons and be negatively charged during the triboelectrification process. The results show that the CNF-TESPN@CNF-based green TENG can deliver a current of 14.4 μA and a voltage of 251 V. Moreover, compared to electronegative cellulose acetate, the triboelectric charge density (TECD) of the modified CNF film was increased by 95%, showing ultrahigh contact electrification performance. The smart self-powered system can be used as a wearable device for an energy harvester or corrosion protection of metal surfaces in the ocean.

Graphical abstract: A self-assembled molecularly triboelectronegative cellulose nanofiber material with ultrahigh contact triboelectrification for the design of green triboelectric nanogenerators

Supplementary files

Article information

Article type
Paper
Submitted
12 Dec 2022
Accepted
25 Mar 2023
First published
27 Mar 2023
This article is Open Access
Creative Commons BY-NC license

Sustainable Energy Fuels, 2023,7, 2087-2093

A self-assembled molecularly triboelectronegative cellulose nanofiber material with ultrahigh contact triboelectrification for the design of green triboelectric nanogenerators

Y. Li, N. Wang, S. Wang, B. Li, E. Ye, X. Loh and Z. Li, Sustainable Energy Fuels, 2023, 7, 2087 DOI: 10.1039/D2SE01715F

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