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Polysaccharide-based hydrogel electrolytes enriched with poly(norepinephrine) for sustainable aqueous electrochemical capacitors

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dc.abstract.enOne of the main drawbacks of conventional energy storage systems is the possibility of electrolyte leakage due to faulty encapsulation or accidental overcharge. In this work, novel environmentally benign all-biopolymer-based hydrogels have been designed to be used as electrolytes in aqueous electrochemical capacitors. A primary component of gels, i.e. microcrystalline cellulose dissolved in NaOH/urea mixture and cross-linked with epichlorohydrin, was used in combination with agarose, or subsequently introduced agarose and poly(norepinephrine) to form the three-dimensional interpenetrated polymer network of enhanced mechanical stability. The effect of introduced components has been studied independently and investigated in terms of morphology, conductivity, swelling degree, and mechanical/structural properties. The electrochemical diagnostic tests of electrochemical capacitors utilizing acidic (H2SO4, H4SiW12O40) and neutral (Na2SO4) electrolyte-saturated hydrogels of the best overall characteristics have revealed the performance approaching the one characteristic of the liquid electrolyte-based counterparts but with lower self-discharge. The systems were characterized by the capacitance of 97–127 F g−1 at 0.1 A g−1 with retention of 33–89% at 20 A g−1, and cycling life of 10 000 cycles with a maximum of 10% of capacitance loss. The effect of intentionally improved hydrophilic properties of activated carbon electrodes, on the interfacial compatibility between electrode/hydrogel electrolyte is discussed as well. The results are in line with the global trend of green and sustainable energy storage designed for specific applications, i.e. in-vivo systems and wearable electronics.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKulesza, Paweł
dc.contributor.authorGarbacz, Piotr
dc.contributor.authorSkunik-Nuckowska, Magdalena
dc.contributor.authorDyjak, Sławomir
dc.contributor.authorWieczorek, Władysław
dc.contributor.authorWisińska, Natalia H.
dc.date.accessioned2024-01-25T17:02:43Z
dc.date.available2024-01-25T17:02:43Z
dc.date.issued2023
dc.description.financeNie dotyczy
dc.description.number2
dc.description.volume11
dc.identifier.doi10.1016/J.JECE.2023.109346
dc.identifier.issn2213-3437
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/116485
dc.identifier.weblinkhttps://doi.org/10.1016/j.jece.2023.109346
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.relation.pages109346
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titlePolysaccharide-based hydrogel electrolytes enriched with poly(norepinephrine) for sustainable aqueous electrochemical capacitors
dc.typeJournalArticle
dspace.entity.typePublication