Impact of Moisture Sorbed from Air by Activated Carbon Electrodes on their Capacitance in Aqueous Electrolyte of Supercapacitor
DOI:
https://doi.org/10.15330/pcss.16.3.547-550Keywords:
activated carbon electrode, capacitance, electric double-layer capacitor, sorption supercapacitorAbstract
Impact of moisture sorbed from air by porous carbon electrodes after vacuum drying on their specific capacitance in aqueous 1.0 M Na2SO4 solution was studied. It was shown by cyclic voltammetry and impedance spectroscopy that electrodes lose more than 20 % of the capacitance after such drying procedure and in order to recover it takes about 1 month.
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