Screening Protocol for the Electrochemical Characterization of Potential Supercapacitor Materials
Defence R and D Canada - Atlantic Dartmouth, Nova Scotia Canada
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A method for the preparation and measurement of potential active materials for supercapacitor electrodes was developed and validated. An ethanolic suspension of the active material was applied to carbon fibre fabric, and allowed to dry. The electrode active material and carbonsupport was affixed in a half cell assembly that allowed consistent placement of the reference electrode. The electrode was characterized in deaerated 0.5 M H2SO4 aq by cyclic voltammetry, electrochemical impedance spectroscopy, and constant current charge discharge experiments. The electrode preparation method, and half cell assembly was determined to be highly reproducible, resulting in accurate electrochemical characterization of the active material.