Dear friends,
it is well known that the total capacitance = surface capacitance + intercalation capacitance (i(V)/v^1/2 = k1 v^1/2+K2) for the composite electrode materials, and the concept necessarily means that upon deconvolution of CV curves as to get the different capacitive contributors using the plot of i/scan rate^1/2 vs scan rate^1/2 , the different contributor need to lie inside the area of CV curve.
but when i carried out the deconvolution the part of the capacitive contribution lie out side the area of CV, can somebody suggest me why it happens so?
please have a look at the results that i have attained, attached herewith
The shape of the CV is quite strange. The following paper has discussed the reason for such a strange CV envelope. Please go through...
DOI:10.1007/s40820-020-0392-8 https://link.springer.com/article/10.1007%2Fs40820-020-0392-8
It is not necessary always, especially in non-EDLC CVs. But the deconvoluted part should not exceed the total current amplitude at each potential.
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