Artículo
Direct laser writing of MnOx decorated laser-induced graphene on paper for sustainable microsupercapacitor fabrication
Autor/es | Abreu, Rodrigo
dos Santos Klem, Maykel Pinheiro, Tomás Vaz Pinto, Joana Alves, Neri Martins, Rodrigo Carlos, Emanuel Coelho, João |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2024-05-17 |
Fecha de depósito | 2024-05-21 |
Publicado en |
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Resumen | Laser-induced graphene (LIG) on paper is a popular choice for fabricating flexible micro-supercapacitors (MSCs) as it is a simple and sustainable process. However, carbon-based MSC electrodes have limited energy densities. ... Laser-induced graphene (LIG) on paper is a popular choice for fabricating flexible micro-supercapacitors (MSCs) as it is a simple and sustainable process. However, carbon-based MSC electrodes have limited energy densities. To address this challenge, this study presents a highly reproducible and cost-effective method for decorating manganese oxide (MnOx) on interdigital LIG MSC electrodes, fabricated via a single-step direct laser writing (DLW) process on paper substrates. The paper fibers embedded with MnOx precursors are transformed into graphene through laser processing while reducing the salt, resulting in the formation of MnOx-LIG. The resulting MnOx-LIG-MSC exhibits a specific capacitance of 12.30 mF cm−2 (0.05 mA cm−2) with a 60 % retention at 1000 bending cycles (30°), due to the pseudocapacitive contribution of MnOx. Furthermore, the devices exhibit high electrochemical stability, retaining 190 % of the initial specific capacitance after 10,000 cycles, and a high energy density of 2.6 μWh cm−2 (at a power of 0.109 mW cm−2). The study demonstrates that manganese oxide-based LIG-MSCs have the potential to be used as energy storage devices for portable, low-cost, and flexible paper electronics. |
Agencias financiadoras | Fundação para a Ciência e a Tecnologia. Portugal Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication- Portugal European Union (UE) Junta de Andalucía São Paulo Research Foundation (FAPESP). Brasil |
Identificador del proyecto | LA/P/0037/2020
UIDP/50025/2020 UIDB/50025/2020 CEECIND/00880/2018 GAMBIT 2022.01493.PTDC 101096021 (SUPERIOT, HORIZON-JU-SNS-2022-STREAM-B-01-03 EMERGIA JEMC21_00174 FAPESP 2021/14141-1 FAPESP 2018/02604-4 FAPESP 2022/12332-7 |
Cita | Abreu, R., dos Santos Klem, M., Pinheiro, T., Vaz Pinto, J., Alves, N., Martins, R.,...,Coelho, J. (2024). Direct laser writing of MnOx decorated laser-induced graphene on paper for sustainable microsupercapacitor fabrication. FlatChem, 46, 100672. https://doi.org/10.1016/j.flatc.2024.100672. |
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