Abstract
This study systematically analyzes the structural properties of the ionic liquids 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]) and choline-glycine ([cho][gly]) to evaluate hydration effects on their electrical properties in supercapacitors with graphene or graphyne electrodes. The research examines how hydration impacts the electric window, total capacitance and gravimetric energy density of the devices. The goal is to enhance energy storage performance through innovative materials, focusing on sustainable, eco-friendly technologies. Results show that hydration influences the structure of the Electric Double Layer (EDL), with water molecules affecting ion mass density on the surface of the electrodes. Positive ion concentration is higher in graphene electrodes compared to graphyne. The study projects gravimetric energy density and energy efficiency based on potential difference and hydration level, highlighting the critical role of hydration in optimizing supercapacitor electrical properties and industrial application opportunities.
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