Why the capacitance of a supercapacitor is low on 1Cp and higher at 3 Cp?

Muhammad Atif Ehsan @Muhammad-Atif-Ehsan

21 September 2023 1 6K Report

i synthesised the heterostructures of Cobalt SDulfides and Cobalt Nickel LDH but the electrode show lower capacitince at current densities of 1 and 2 Cp but it shows much higher Capacitance at higher current densities Cp? can anyone help me to understand this

Ioannis Samaras

Dear Muhammad Atif Ehsan ,

the 'much higher (apparent) Capacitance at higher current densities'

masks an internal-discharging SC (short circuit) issue(s).

Note/tip: Try a diagnostic EIS, applying/presetting the VDC polarization parameter near (100%) SOC (state of full charge).

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