Green Fabrication of Stackable Laser‐Induced Graphene Micro‐Supercapacitors under Ambient Conditions: Toward the Design of Truly Sustainable Technological Platforms

Silvestre, Sara L.; Morais, Maria; Soares, Raquel R. A.; Johnson, Zachary T.; Benson, Eric; Ainsley, Elisabeth; Pham, Veronica; Claussen, Johnathan C.; Gomes, Carmen L.; Martins, Rodrigo; Fortunato, Elvira; Pereira, Luis; Coelho, João

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https://hdl.handle.net/2142/126077 Copy

Description

Title

Green Fabrication of Stackable Laser‐Induced Graphene Micro‐Supercapacitors under Ambient Conditions: Toward the Design of Truly Sustainable Technological Platforms

Author(s)

• Silvestre, Sara L.
• Morais, Maria
• Soares, Raquel R. A.
• Johnson, Zachary T.
• Benson, Eric
• Ainsley, Elisabeth
• Pham, Veronica
• Claussen, Johnathan C.
• Gomes, Carmen L.
• Martins, Rodrigo
• Fortunato, Elvira
• Pereira, Luis
• Coelho, João

Issue Date

2024-05-16

Keyword(s)

• Green Fabrication
• Sustainable
• Graphene
• Micro-Supercapacitors
• Design
• Papermaking

Date of Ingest

2025-02-28T21:11:01-06:00

Abstract

Extensive research into green technologies is driven by the worldwide push for eco-friendly materials and energy solutions. The focus is on synergies that prioritize sustainability and environmental benefits. This study explores the potential of abundant, non-toxic, and sustainable resources such as paper, lignin-enriched paper, and cork for producing laser-induced graphene (LIG) supercapacitor electrodes with improved capacitance. A single-step methodology using a CO2 laser system is developed for fabricating these electrodes under ambient conditions, providing an environmentally friendly alternative to conventional carbon sources. The resulting green micro-supercapacitors (MSCs) achieve impressive areal capacitance (≈7–10 mF cm−2) and power and energy densities (≈4 μW cm-2 and ≈0.77 µWh cm−2 at 0.01 mA cm−2). Stability tests conducted over 5000 charge–discharge cycles demonstrate a capacitance retention of ≈80–85%, highlighting the device durability. These LIG-based devices offer versatility, allowing voltage output adjustment through stacked and sandwich MSCs configurations (parallel or series), suitable for various large-scale applications. This study demonstrates that it is possible to create high-quality energy storage devices based on biodegradable materials. This development can lead to progress in renewable energy and off-grid technology, as well as a reduction in electronic waste.

Publisher

Advanced Materials Technologies (Wiley)

Type of Resource

text

Genre of Resource

article

Language

eng

DOI

10.1002/admt.202400261

Sponsor(s)/Grant Number(s)

FCT—Fundação para a Ciência e a Tecnologia

Copyright and License Information

Open Access

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