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Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes

Meeting the ever-increasing global energy demands through sustainable and environmentally friendly means is a paramount challenge. In response to this imperative, this study is dedicated to the development of biopolymer electrolytes, which hold promise for improving the efficiency, safety, and biode...

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Autores principales: Cruz-Balaz, María I., Bósquez-Cáceres, María Fernanda, Delgado, Anabel D., Arjona, Noé, Morera Córdova, Vivian, Álvarez-Contreras, Lorena, Tafur, Juan P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10675044/
https://www.ncbi.nlm.nih.gov/pubmed/38006122
http://dx.doi.org/10.3390/polym15224398
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author Cruz-Balaz, María I.
Bósquez-Cáceres, María Fernanda
Delgado, Anabel D.
Arjona, Noé
Morera Córdova, Vivian
Álvarez-Contreras, Lorena
Tafur, Juan P.
author_facet Cruz-Balaz, María I.
Bósquez-Cáceres, María Fernanda
Delgado, Anabel D.
Arjona, Noé
Morera Córdova, Vivian
Álvarez-Contreras, Lorena
Tafur, Juan P.
author_sort Cruz-Balaz, María I.
collection PubMed
description Meeting the ever-increasing global energy demands through sustainable and environmentally friendly means is a paramount challenge. In response to this imperative, this study is dedicated to the development of biopolymer electrolytes, which hold promise for improving the efficiency, safety, and biodegradability of energy systems. The present study aims to evaluate hydrogels synthesized from chitosan biopolymer and starch from avocado seed residues in different ratios, and dried using freeze-thawing and freeze-drying techniques. Epichlorohydrin was used as a chemical crosslinker to create a suitable degree of swelling using an ionic solution. Physical freezing crosslinking strategies such as freezing–thawing and freezing–drying were performed to generate a denser porous structure in the polymer matrix. Subsequently, synthesized electrolytes were immersed in 12 M KOH solution to improve their electrochemical properties. The effect of the different ratios of starch in the hydrogels on the structural properties of the materials was evaluated using characterization techniques such as FTIR and XRD, which allowed to confirm the crosslinking between chitosan and starch. The electrochemical performance of the hydrogels is assessed using electrochemical impedance spectroscopy. A maximum conductivity value of 0.61 S·cm(−1) was achieved at room temperature. The designed materials were tested in prototype zinc–air batteries; their specific capacity value was 1618 mA h·g(−1), and their obtained power density was 90 mW·cm(−2). These substantial findings unequivocally underscore the potential of the synthesized hydrogels as highly promising electrolytes for the application in zinc–air battery systems.
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spelling pubmed-106750442023-11-14 Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes Cruz-Balaz, María I. Bósquez-Cáceres, María Fernanda Delgado, Anabel D. Arjona, Noé Morera Córdova, Vivian Álvarez-Contreras, Lorena Tafur, Juan P. Polymers (Basel) Article Meeting the ever-increasing global energy demands through sustainable and environmentally friendly means is a paramount challenge. In response to this imperative, this study is dedicated to the development of biopolymer electrolytes, which hold promise for improving the efficiency, safety, and biodegradability of energy systems. The present study aims to evaluate hydrogels synthesized from chitosan biopolymer and starch from avocado seed residues in different ratios, and dried using freeze-thawing and freeze-drying techniques. Epichlorohydrin was used as a chemical crosslinker to create a suitable degree of swelling using an ionic solution. Physical freezing crosslinking strategies such as freezing–thawing and freezing–drying were performed to generate a denser porous structure in the polymer matrix. Subsequently, synthesized electrolytes were immersed in 12 M KOH solution to improve their electrochemical properties. The effect of the different ratios of starch in the hydrogels on the structural properties of the materials was evaluated using characterization techniques such as FTIR and XRD, which allowed to confirm the crosslinking between chitosan and starch. The electrochemical performance of the hydrogels is assessed using electrochemical impedance spectroscopy. A maximum conductivity value of 0.61 S·cm(−1) was achieved at room temperature. The designed materials were tested in prototype zinc–air batteries; their specific capacity value was 1618 mA h·g(−1), and their obtained power density was 90 mW·cm(−2). These substantial findings unequivocally underscore the potential of the synthesized hydrogels as highly promising electrolytes for the application in zinc–air battery systems. MDPI 2023-11-14 /pmc/articles/PMC10675044/ /pubmed/38006122 http://dx.doi.org/10.3390/polym15224398 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cruz-Balaz, María I.
Bósquez-Cáceres, María Fernanda
Delgado, Anabel D.
Arjona, Noé
Morera Córdova, Vivian
Álvarez-Contreras, Lorena
Tafur, Juan P.
Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title_full Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title_fullStr Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title_full_unstemmed Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title_short Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes
title_sort green energy storage: chitosan-avocado starch hydrogels for a novel generation of zinc battery electrolytes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10675044/
https://www.ncbi.nlm.nih.gov/pubmed/38006122
http://dx.doi.org/10.3390/polym15224398
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