Anais do Workshop INEO 2023

DEVELOPMENT OF POLYANILINE AND LIGNIN POLYMERIC BLENDS FOR APPLICATION IN SUPERCAPACITORS

Published in 12/12/2023 - ISBN: 978-65-272-0088-8

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Paper Title
DEVELOPMENT OF POLYANILINE AND LIGNIN POLYMERIC BLENDS FOR APPLICATION IN SUPERCAPACITORS
Authors
  • Julio Volpato da Silva
  • W. J. S. França (IC); UTFPR
  • Lialis Vitoria Menon Cunha
  • J.V. da Silva (ME); UTFPR
  • João B. Floriano
  • ANDREIA GERNISKI MACEDO
  • Roberto Faria
  • P. C. Rodrigues (Pq); UTFPR
Modality
Pôster
Subject area
Síntese e caracterização de materiais
Publishing Date
12/12/2023
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/workshop-do-ineo-2023/613236-development-of-polyaniline-and-lignin-polymeric-blends-for-application-in-supercapacitors
ISBN
978-65-272-0088-8
Keywords
Polyaniline, Lignin, Supercapacitor, Green Chemistry
Summary
Developing an efficient energy storage system is crucial for storing energy sources, especially renewable ones that are exponentially increased in the last decade. Supercapacitors have shown significant attraction among the different energy storage systems due to their high-power density, long life cycle, fast charge and discharge process, and environment-friendliness. This device can be able to be applied in systems that require a fast source of energy, for instance, as regenerative breaking in electric vehicles. Nevertheless, commercial supercapacitors do not have proper energy density and flexibility; thus, these features limit their applications. Conjugated polymers may be the answer to solve this problem due to their excellent electrical properties, as presented by Polyaniline (PANI). The pseudocapacitive behavior of polyaniline allows its application in supercapacitor devices with higher power density capacity. In this work, the properties of PANI were combined with Lignin, a biopolymer found in plants and as residue from the pulp and paper industry. Lignin's chemical structure is based on phenylpropane units, which can be oxidized to form interesting products, such as quinones. These molecules are electrochemically active and can provide two electrons and two H+ ions per unit, resulting from hydroquinone (H2Q) oxidation into benzoquinone (Q). Herein, PANI-Lignin blends were prepared with variable proportions, processed as films, and tested as electrodes in supercapacitors. The results pointed out a capacitance of 518 F·g-1 at 1 A·g-1 and a retention capacity of 71% after 1000 cycles, promising results for the development of energy storage devices. Also, the strong interactions between the two materials, provide by hydrogen bonds and p stacking, lead to the stabilization of the structure of PANI. These bonds act as a bridge to control the volume change during the charge/discharge process that naturally happens and causes PANI degradation, promoting an improvement in the mechanical and electrochemical properties. Therefore, this study shows a low-cost and eco-friendly solution combining industrial recycling waste and further application in energy storage, creating a potential circular economy through green chemistry. Acknowledgments: INEO, CNPq and Fundação Araucária.
Title of the Event
Workshop do INEO 2023
City of the Event
Nazaré Paulista
Title of the Proceedings of the event
Anais do Workshop INEO 2023
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

SILVA, Julio Volpato da et al.. DEVELOPMENT OF POLYANILINE AND LIGNIN POLYMERIC BLENDS FOR APPLICATION IN SUPERCAPACITORS.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/613236-DEVELOPMENT-OF-POLYANILINE-AND-LIGNIN-POLYMERIC-BLENDS-FOR-APPLICATION-IN-SUPERCAPACITORS. Access in: 21/12/2024

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