FERNANDEZ, A.P.R.PERIGO, E.A.FARIA, R.N.2021-12-232021-12-232021FERNANDEZ, A.P.R.; PERIGO, E.A.; FARIA, R.N. Analytical expressions for electrochemical supercapacitor with potential dependent capacitance. <b>Journal of Energy Storage</b>, v. 43, p. 1-11, 2021. DOI: <a href="https://dx.doi.org/10.1016/j.est.2021.103156">10.1016/j.est.2021.103156</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32456.2352-152Xhttp://repositorio.ipen.br/handle/123456789/32456Distinctly from ordinary capacitors which have a fixed capacitance, the capacitance of electrochemical supercapacitors is dependent on the applied potential. This feature introduces an additional complication to the analytical solution representing the supercapacitor circuit. Here a simplified equivalent circuit of electric double layer capacitors or electrochemical supercapacitors is proposed so that expressions evaluating the potential-dependent capacitance are derived considering short periods of charging and discharging process as in cyclic voltammetry carried out in a few minutes. Comparisons between such theoretical development and experimental cyclic voltammetry data – presenting a very good agreement – are presented and discussed.1-11closedAccesselectrochemistrycapacitorsanalytical solutionvoltametryArtigo de periódico4310.1016/j.est.2021.10315681.0982.67