Electrochemical Deposition of Manganese Oxide on Paper-Based Laser-Induced Graphene for the Fabrication of Sustainable High-Energy-Density Supercapacitors

Autor(es)

Klem, Maykel dos Santos ; Abreu, Rodrigo ; Pinheiro, Tomas ; Coelho, Joao ; Alves, Neri ; Martins, Rodrigo

• Tipo de documento: Artigo Científico
• Fonte: ADVANCED SUSTAINABLE SYSTEMS; v. N/A, p. 13-pg., 2024-07-24.

Resumo

Laser-induced graphene (LIG) is widely used to fabricate microsupercapacitors (MSCs) on various sustainable substrates, such as wood, cork, and lignin. However, the fabrication of MSCs, especially high energy density devices on paper, has rarely been reported. In this work, LIG electrodes are fabricated on wax-coated paper, followed by electrochemical deposition of manganese oxide (MnO2). The obtained LIG/MnO2 supercapacitors exhibit a maximum areal capacitance of 86.9 mF cm-2, while a device with pristine LIG electrodes exhibit a capacitance of 9.1 mF cm-2, both measured at a current density of 0.1 mA cm-2. In addition, the supercapacitor exhibits good cycling stability, retaining 80% of its initial capacitance after 1000 charge/discharge cycles at a current density of 1 mA cm-2. Notably, the LIG/MnO2 supercapacitor exhibits an exceptionally high energy density of 7.3 mu Wh cm-2 at a power density of 38.8 mu W cm-2. In summary, a simple, fast, scalable, reproducible, and energy-efficient fabrication method is represented using electrochemical deposition of manganese oxide on paper-based laser-induced graphene, which are natural, abundant, and sustainable materials, paving the way for large-scale production of environmentally friendly supercapacitors. An easy, fast, scalable, and energy-efficient fabrication method utilizing electrochemical deposition of manganese oxide on paper-based laser-induced graphene is reported. The study demonstrates the potential application of these electrodes in degradable and flexible high-energy density supercapacitors, paving the way for large-scale production of environmentally friendly energy storage devices using natural, abundant, and sustainable materials. image (AU)

• Processo FAPESP: 18/02604-4 - Estudo de supercapacitores impressos integrando transistores com eletrólito no gate
• Beneficiário: Maykel dos Santos Klem
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 22/12332-7 - Dispositivos eletrônicos impressos para uma eletrônica sustentável
• Beneficiário: Neri Alves
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/14141-1 - Estudo de eletrodos à base de grafeno induzido por laser para aplicação em dispositivos biodegradáveis
• Beneficiário: Maykel dos Santos Klem
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado