Modelling voltametric data from electrochemical capacitors

Title: Modelling voltametric data from electrochemical capacitors
Creator: Fellows, Hannah M.; Forghani, Marveh; Crosnier, Olivier; Donne, Scott W.
Relation: Journal of Power Sources Vol. 417, Issue 31 March 2019, p. 193-206
Publisher Link: http://dx.doi.org/10.1016/j.jpowsour.2018.11.078
Publisher: Elsevier
Resource Type: journal article
Date: 2019
Description: Linear and cyclic voltammetry are common method for the characterization of electrochemical capacitor electrodes. Herewith we describe an approach to modelling voltametric data to provide more detailed information about the electrode under study. The model is based upon the response of a series arrangement of a resistor and capacitor to a linearly changing potential to simulate a double layer capacitor. Also included is a term to account for redox processes in localized domains, electrode instability at the extremes of potential, as well as electrode resistance, each of which represent behaviour commonly encountered in electrochemical capacitors. Development of the model is presented, together with its application to the aqueous manganese dioxide electrode.
Subject: cyclic voltammetry; electrochemical capacitors; double layer capacitors; pseudo-capacitance
Identifier: http://hdl.handle.net/1959.13/1466579
Identifier: uon:47594
Identifier: ISSN:0378-7753
Language: eng
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