Cellulose-based hydrogels, obtained by tuned, low-cost synthetic routes, are proposed as convenient gel electrolyte membranes. Hydrogels have been prepared from different types of cellulose by optimized solubilization and crosslinking steps. The obtained gel membranes have been characterized by infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and mechanical tests in order to investigate the crosslinking occurrence and modifications of cellulose resulting from the synthetic process, morphology of the hydrogels, their thermal stability, and viscoelasticextensional properties, respectively. Hydrogels liquid uptake capability and ionic conductivity, derived from absorption of aqueous electrolytic solutions, have been evaluated, to assess the successful applicability of the proposed membranes as gel electrolytes for electrochemical devices. To this purpose, the redox behavior of electroactive species entrapped into the hydrogels has been investigated by cyclic voltammetry tests, revealing very high reversibility and ion diffusivity.

Synthesis and characterization of cellulose-based hydrogels to be used as gel electrolytes / Navarra, MARIA ASSUNTA; Dal Bosco, Chiara; Moreno, Judith Serra; Vitucci, FRANCESCO MARIA; Paolone, Annalisa; Panero, Stefania. - In: MEMBRANES. - ISSN 2077-0375. - STAMPA. - 5:4(2015), pp. 810-823. [10.3390/membranes5040810]

Synthesis and characterization of cellulose-based hydrogels to be used as gel electrolytes

NAVARRA, MARIA ASSUNTA
;
Dal Bosco, Chiara;VITUCCI, FRANCESCO MARIA;PANERO, Stefania
2015

Abstract

Cellulose-based hydrogels, obtained by tuned, low-cost synthetic routes, are proposed as convenient gel electrolyte membranes. Hydrogels have been prepared from different types of cellulose by optimized solubilization and crosslinking steps. The obtained gel membranes have been characterized by infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and mechanical tests in order to investigate the crosslinking occurrence and modifications of cellulose resulting from the synthetic process, morphology of the hydrogels, their thermal stability, and viscoelasticextensional properties, respectively. Hydrogels liquid uptake capability and ionic conductivity, derived from absorption of aqueous electrolytic solutions, have been evaluated, to assess the successful applicability of the proposed membranes as gel electrolytes for electrochemical devices. To this purpose, the redox behavior of electroactive species entrapped into the hydrogels has been investigated by cyclic voltammetry tests, revealing very high reversibility and ion diffusivity.
2015
Cellulose hydrogels; Gel electrolyte membranes; Ionic conductivity and diffusivity; Swelling behavior; Materials Science (all)
01 Pubblicazione su rivista::01a Articolo in rivista
Synthesis and characterization of cellulose-based hydrogels to be used as gel electrolytes / Navarra, MARIA ASSUNTA; Dal Bosco, Chiara; Moreno, Judith Serra; Vitucci, FRANCESCO MARIA; Paolone, Annalisa; Panero, Stefania. - In: MEMBRANES. - ISSN 2077-0375. - STAMPA. - 5:4(2015), pp. 810-823. [10.3390/membranes5040810]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/844650
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