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Eco-Friendly Energy Storage and Energy Harvesting Devices Fabricated by Direct Laser Writing of Chitosan-Lignin-Boric Acid Substrates
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Resumo(s)
Eco-friendly supercapacitor (SC) and triboelectric nanogenerator (TENG) devices were assembled using laser-induced graphene (LIG) electrodes fabricated by direct laser writing of chitosan-lignin-boric acid films. A simple one-step laser irradiation was used to convert the chitosan-based films into 3D, interlinked, and electrically conductive LIG electrode materials. Assembled SCs displayed specific areal capacitances up to 21.4 mF/cm2 at a current density of 0.05 mA/cm2 and 68% capacitance retention for >10,000 charge/discharge cycles. When charged by a commercial solar cell, the SC could power a digital thermo-hygrometer, an electronic stopwatch and a calculator, showing potential for real applications. Single-electrode TENG (SE-TENG) devices were also assembled using PDMS as the dielectric layer. The TENGs displayed an open-circuit voltage of 13.3 V, a short-circuit current of 1.7 μA, and stability over 10,000 cycles. The TENG could charge commercial SCs of 0.1 and 1 μF capacitance in less than 60 s. This work demonstrates the suitability of sustainable materials as feedstock constituents for the generation of LIG electrodes and opens the door to the large-scale production of cost-effective electrode materials for “green” wearable electronic applications.
Descrição
Funding Information: This work has emanated from research conducted with the financial support of Research Ireland (RE), the Department of Agriculture, Food and Marine, on behalf of the Government of Ireland under Grant Number 16/RC/3835 (VISTAMILK). This work was supported by CNPq (Financing Code 200337/2022-0) and grant no. 406925/2022-4-INCT Circularity in Polymer Materials, CAPES (Financing Code 001), and FAPESP (grant no. 2021/12071-6). C.G.O. acknowledges CNPq (grant no. 304753/2022-0). The Article Processing Charge for the publication of this research was funded by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Brazil (ROR identifier: 00x0ma614). Funding Information: This work has emanated from research conducted with the financial support of Research Ireland (RE), the Department of Agriculture, Food and Marine, on behalf of the Government of Ireland under Grant Number 16/RC/3835 (VISTAMILK). This work was supported by CNPq (Financing Code 200337/2022-0) and grant no. 406925/2022-4\u2013INCT Circularity in Polymer Materials, CAPES (Financing Code 001), and FAPESP (grant no. 2021/12071-6). C.G.O. acknowledges CNPq (grant no. 304753/2022-0). Funding Information: The Article Processing Charge for the publication of this research was funded by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Brazil (ROR identifier: 00x0ma614). Publisher Copyright: © 2025 The Authors. Published by American Chemical Society.
Palavras-chave
Biodegradable device Energy harvesting Laser-induced graphene Supercapacitor Sustainable materials Triboelectric nanogenerator Wearable electronics Electronic, Optical and Magnetic Materials Materials Chemistry Electrochemistry