| Abstrakt: |
Combining the features of supercapacitors and textiles solves many of the downsides that conventional electronics have, such as heavy weight, lack of recyclable parts and toxicity. Generally, the electrodes that are used in the manufacturing of energy-storage devices are obtained using toxic solvents and corrosive acids, bases and salts. Herein, in order to address these issues, we report the preparation of seven flexible textile-based electrodes, in which the textile substrates consisted in a woven fabric with cotton and silver threads. One of the substrates was coated using a mixture of glycerol (GlOH), gum arabic (GA) and activated carbon (AC) and, for the rest of them, six different salts were added to this mixture – sodium chloride (NaCl), ammonium chloride (NH4Cl), 1-butyl-1-methylpyrrolidinium hexafluorophosphate (BuMePyPF6), sodium acetate (NaAc), ammonium hexafluorophosphate (NH4PF6) and carboxymethylcellulose sodium salt with low viscosity (NaCMC). Their electrical resistance was measured and the electrical conductivity was then computed. The GlOH-GA-AC-NH4Cl electrode was found to be the most conductive one (244∙10-4S/m), while GlOH-GA-ACBuMePyPF6 was the least conductive electrode (73∙10-4S/m). The surface characterization of the materials was performed using SEM and EDX, through which the morphology electrodes was observed; the size and the shape of the aggregates formed determined the performance of the electrodes. [ABSTRACT FROM AUTHOR] |
