Multi-Layer PVA-PANI Conductive Hydrogel for Symmetrical Supercapacitors: Preparation and Characterization

This work describes a simple, inexpensive, and robust method to prepare a flexible "all in one" integrated hydrogel supercapacitors (HySCs). Preparing smart hydrogels with high electrical conductivity, ability to stretch significantly, and excellent mechanical properties is the last challe...

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Bibliographic Details
Published in:Gels 2024-07, Vol.10 (7), p.458
Main Authors: Giovagnoli, Angelica, D'Altri, Giada, Yeasmin, Lamyea, Di Matteo, Valentina, Scurti, Stefano, Di Filippo, Maria Francesca, Gualandi, Isacco, Cassani, Maria Cristina, Caretti, Daniele, Panzavolta, Silvia, Focarete, Maria Letizia, Rea, Mariangela, Ballarin, Barbara
Format: Article
Language:English
Subjects:
Addition polymerization
Aqueous solutions
Batteries
Biocompatibility
Capacitors
conducting polymer
Conducting polymers
Crosslinking
Deformation
Electric properties
Electrical resistivity
Electrodes
Electrolytes
Electronics
Energy
flexible materials
Freeze-thaw
Freezing
hydrogel
Hydrogels
Hydrogen bonds
Ion currents
Mechanical properties
Molecular weight
Morphology
Multilayers
Optical properties
Polyanilines
Polymers
Polyvinyl alcohol
Self healing materials
Sulfuric acid
supercapacitor
Supercapacitors
wearable sensor
Wearable technology
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Summary:This work describes a simple, inexpensive, and robust method to prepare a flexible "all in one" integrated hydrogel supercapacitors (HySCs). Preparing smart hydrogels with high electrical conductivity, ability to stretch significantly, and excellent mechanical properties is the last challenge for tailored wearable devices. In this paper, we employed a physical crosslinking process that involves consecutive freezing and thawing cycles to prepare a polyvinyl alcohol (PVA)-based hydrogel. Exploiting the self-healing properties of these materials, the assembly of the different layers of the HySCs has been performed. The ionic conductivity within the electrolyte layer arises from the inclusion of an H SO solution in the hydrogel network. Instead, the electronic conductivity is facilitated by the addition of the conductive polymer PANI-PAMPSA into the hydrogel layers. Electrochemical measures have highlighted newsworthy properties related to our HySCs, opening their use in wearable electronic applications.
ISSN:2310-2861
2310-2861
DOI:10.3390/gels10070458