Low-cost, environmentally friendly and high-performance cellulose-based triboelectric nanogenerator for self-powered human motion monitoring

Abstract

Cellulose-based triboelectric nanogenerators (TENGs) can provide power for various monitoring devices and are environmentally friendly and sustainable. Chemical functional modi cation is a common method to improve the electrical output performance of cellulose-based TENGs. In this work, an environmentally friendly high-performance triboelectric nanogenerator based on polydopamine/cellulose nano brils (PDA/CNF) composite membrane and uorinated ethylene propylene (FEP) was developed. Dopamine generates polydopamine nanoparticles through oxidative self-polymerization and adheres to the surface of nano bers. The synergistic effect of amino group introduction and membrane surface microstructure has effectively enhanced the output performance of TENG to a certain extent.The effects of contentration of PDA, thickness of CNF composite lm and different working conditions on the electrical output were systematically investigated.The optimized PDA/CNF-TENG exhibited an enhanced electrical output performance with the voltage, current, and power density values of ≈ 205 V, ≈ 20 µA, and ≈ 56.25 µW•cm − 2 , respectively. The PDA/CNF-TENG exhibited stable and identi able signals when used as a selfpowered sensor for human motion monitoring, showing the potential prospects of cellulose materials for TENG and other electronic applications.

Advanced Triboelectric Applications of Biomass-Derived Materials: A Comprehensive Review

“…By merging cellulose with a variety of materials, these composites capitalize on the natural attributes of cellulose and the distinctive properties of the additives to boost both the efficiency and the longevity of TENGs. The formulation of cellulose composites for triboelectric purposes involves a deliberate process of integrating conductive nanoparticles [44,45], polymers [46,47], or other functional materials [48,49] into a cellulose matrix (Figure 3). This strategic selec-tion of additives aims to augment the electrical conductivity, mechanical robustness, and surface texture of the composite.…”

“…In the realm of wearable electronics, these TENGs stand out due to their flexibility and lightweight characteristics, making them ideal for integration into textiles or wearable devices. Here, they play a critical role in powering sensors [46] and various electronic components [52], ensuring seamless functionality. Beyond wearables, cellulose-based TENGs excel in harvesting energy from ambient movements, including human motion, wind, and water waves.…”

Natural wood-based triboelectric nanogenerators with high fire-safety for energy harvesting toward intelligent buildings

“…[5][6][7][8][9][10][11] In the new era of industry 4.0, therefore, developing energy-efficient wood-derived structural materials has drawn renewed interest for green electronics, advanced construction, and energy applications. [12][13][14][15][16][17] Ideally, the concept of smart buildings can be witnessed upon integrating the economics of converting renewable power to electricity into such materials; [18][19][20][21][22] hence, functionalizing wood materials with tribopolarity has become a critical self-powered and pollution-free technology to replace conventional power supplies in buildings. However, the triboelectric effect of natural wood is generally negligible because of its electro-neutrality.…”