Title:	Eco-Friendly Energy Storage and Energy Harvesting Devices Fabricated by Direct Laser Writing of Chitosan-Lignin-Boric Acid Substrates.
Authors:	ISLAM, J. SILVA, R. R. A. IMBROGNO, A. OTONI, C. G. MARTINS, R. MATTOSO, L. H. C. QUINN, A. J. IACOPINO, D.
Affiliation:	TYNDALL NATIONAL INSTITUTE, UNIVERSITY COLLEGE CORK, CORK T12 R5CP, IRELAND FEDERAL UNIVERSITY OF SÃO CARLOS TYNDALL NATIONAL INSTITUTE, UNIVERSITY COLLEGE CORK, CORK T12 R5CP, IRELAND FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR) CEMOP/UNINOVA, CAPARICA 2829-516, PORTUGAL LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA TYNDALL NATIONAL INSTITUTE, UNIVERSITY COLLEGE CORK, CORK T12 R5CP, IRELAND TYNDALL NATIONAL INSTITUTE, UNIVERSITY COLLEGE CORK, CORK T12 R5CP, IRELAND.
Date Issued:	2025
Citation:	ACS Applied Electronic Materials, v. 7, 2025.
Pages:	4801−4813
Description:	ABSTRACT: 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.
Keywords:	Laser-induced graphene Sustainable materials Supercapacitor Triboelectric nanogenerator Energy harvesting
DOI:	https://doi.org/10.1021/acsaelm.5c00234
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPDIA)