TY - JOUR
T1 - Paper-based laser-induced graphene for sustainable and flexible microsupercapacitor applications
AU - Coelho, João
AU - Correia, Ricardo F.
AU - Silvestre, Sara
AU - Pinheiro, Tomás
AU - Marques, Ana C.
AU - Correia, M. Rosário P.
AU - Pinto, Joana Vaz
AU - Fortunato, Elvira
AU - Martins, Rodrigo
N1 - info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0037%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F50025%2F2013/PT#
info:eu-repo/grantAgreement/EC/H2020/787410/EU#
info:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F00880%2F2018%2FCP1564%2FCT0003/PT#
info:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F151295%2F2021/PT#
info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F149751%2F2019/PT#
info:eu-repo/grantAgreement/FCT/OE/2020.08606.BD/PT#
Funding Information:
Open access funding provided by FCT|FCCN (b-on). This work was financed by national funds from Fundação para a Ciência e a Tecnologia (FCT), I.P., by FEDER funds through the COMPETE 2020 Program and National Funds through Portuguese Foundation for Science and Technology under projects POCI-01–0145-FEDER-007688.
Publisher Copyright:
© 2022, The Author(s).
PY - 2023
Y1 - 2023
N2 - Laser-induced graphene (LIG) is as a promising material for flexible microsupercapacitors (MSCs) due to its simple and cost-effective processing. However, LIG-MSC research and production has been centered on non-sustainable polymeric substrates, such as polyimide. In this work, it is presented a cost-effective, reproducible, and robust approach for the preparation of LIG structures via a one-step laser direct writing on chromatography paper. The developed strategy relies on soaking the paper in a 0.1 M sodium tetraborate solution (borax) prior to the laser processing. Borax acts as a fire-retardant agent, thus allowing the laser processing of sensitive substrates that other way would be easily destroyed under the high-energy beam. LIG on paper exhibiting low sheet resistance (30 Ω sq−1) and improved electrode/electrolyte interface was obtained by the proposed method. When used as microsupercapacitor electrodes, this laser-induced graphene resulted in specific capacitances of 4.6 mF cm−2 (0.015 mA cm−2). Furthermore, the devices exhibit excellent cycling stability (> 10,000 cycles at 0.5 mA cm−2) and good mechanical properties. By connecting the devices in series and parallel, it was also possible to control the voltage and energy delivered by the system. Thus, paper-based LIG-MSC can be used as energy storage devices for flexible, low-cost, and portable electronics. Additionally, due to their flexible design and architecture, they can be easily adapted to other circuits and applications with different power requirements. Graphical Abstract: [Figure not available: see fulltext.]
AB - Laser-induced graphene (LIG) is as a promising material for flexible microsupercapacitors (MSCs) due to its simple and cost-effective processing. However, LIG-MSC research and production has been centered on non-sustainable polymeric substrates, such as polyimide. In this work, it is presented a cost-effective, reproducible, and robust approach for the preparation of LIG structures via a one-step laser direct writing on chromatography paper. The developed strategy relies on soaking the paper in a 0.1 M sodium tetraborate solution (borax) prior to the laser processing. Borax acts as a fire-retardant agent, thus allowing the laser processing of sensitive substrates that other way would be easily destroyed under the high-energy beam. LIG on paper exhibiting low sheet resistance (30 Ω sq−1) and improved electrode/electrolyte interface was obtained by the proposed method. When used as microsupercapacitor electrodes, this laser-induced graphene resulted in specific capacitances of 4.6 mF cm−2 (0.015 mA cm−2). Furthermore, the devices exhibit excellent cycling stability (> 10,000 cycles at 0.5 mA cm−2) and good mechanical properties. By connecting the devices in series and parallel, it was also possible to control the voltage and energy delivered by the system. Thus, paper-based LIG-MSC can be used as energy storage devices for flexible, low-cost, and portable electronics. Additionally, due to their flexible design and architecture, they can be easily adapted to other circuits and applications with different power requirements. Graphical Abstract: [Figure not available: see fulltext.]
KW - Flexible devices
KW - Laser-induced graphene
KW - Microsupercapacitors
KW - Paper electronics
KW - Sustainable production methods
UR - http://www.scopus.com/inward/record.url?scp=85145396550&partnerID=8YFLogxK
U2 - 10.1007/s00604-022-05610-0
DO - 10.1007/s00604-022-05610-0
M3 - Article
C2 - 36585475
AN - SCOPUS:85145396550
SN - 0026-3672
VL - 190
JO - Microchimica Acta
JF - Microchimica Acta
IS - 1
M1 - 40
ER -