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Highly transparent sustainable biogel electrolyte based on cellulose acetate for application in electrochemical devices.
- Source :
-
International journal of biological macromolecules [Int J Biol Macromol] 2024 Apr; Vol. 265 (Pt 1), pp. 130757. Date of Electronic Publication: 2024 Mar 08. - Publication Year :
- 2024
-
Abstract
- In this study, an easy and low-cost production method for a cellulose acetate-based gel polymer containing lithium perchlorate and propylene carbonate is described, as well as the investigation of its properties for potential use as an electrolyte in electrochemical devices. Cellulose acetate, a biopolymer derived from natural matrix, is colourless and transparent, as confirmed by the UV-Vis spectroscopy, with 85 % transparency in visible spectrum. The gels were prepared and tested at different concentrations and proportions to optimise their properties. Thermogravimetry, XRD, and FTIR analyses revealed crucial characteristics, including a substantial 90 % mass loss between 150 and 250 °C, a semi-crystalline nature with complete salt dissociation within the polymer matrix, and a decrease in intensity at 1780 cm <superscript>-1</superscript> with increasing Li <superscript>+</superscript> ion concentration, suggesting an improvement in ionic conduction capacity. In terms of electrochemical performance, the gel containing 10 % by mass of cellulose acetate and 1.4 M of LiClO <subscript>4</subscript> emerged as the most promising. It exhibited a conductivity of 2.3 × 10 <superscript>-4</superscript> S.cm <superscript>-1</superscript> at 25 °C and 3.0 × 10 <superscript>-4</superscript>  S.cm <superscript>-1</superscript> at 80 °C. Additionally, it demonstrated an ideal shape of cyclic voltammetry curves and stability after 400 cycles, establishing its suitability as an electrolyte in electrochemical devices.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Subjects :
- Polymers
Electric Conductivity
Electrolytes
Cellulose analogs & derivatives
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0003
- Volume :
- 265
- Issue :
- Pt 1
- Database :
- MEDLINE
- Journal :
- International journal of biological macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 38462107
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2024.130757