i want to calculate specific capacitance for asymmetric configuration. Is this same as for symmetric configuration?. i am using two electrodes configuration.
It is similar. You have to use the mass of the sandwich cell (two electrodes). But in this case you have to use two different masses (asymmetric) instead of the same two masses of the symmetric one.
Dear Amjid Rafique,
If I am to help, you have to tell me what is the asymetric nad symetric two electrode configuration.
Regards
Petr
Asymmetric configuration mean using two different type of electrode for supercapacitors and symmetric mean using same electrode materials.like graphite/ ZnO compposite elecctrodes both same and aysmmetric like CNT// graphite/Zno
In this paper you have some intersting information to perform the calculation
https://www.researchgate.net/publication/303021898_Enhancing_Specific_Energy_and_Power_in_Asymmetric_Supercapacitors_-A_Synergetic_Strategy_based_on_the_Use_of_Redox_Additive_Electrolytes
Article Enhancing Specific Energy and Power in Asymmetric Supercapac...
Dear Amjid Rafique,
your system then consists of three characteristic spatial regions, the first electrode-electrolyte interface, the electrolyte itself and the electrolyte-second electrode interface. These three spatial regions can be modelled, in a first approximation, by three parallel R,C terms in series. Here the R's are the dc resistances and C's are the geometrical capacitances in the respective regions. In the symmetric case then, the two interfaces are identical and the two R,C terms collapse to one with twice the resistance and half the capacitance.
The question now is what is it precisely that you want to calculate. Is it one of these capacitances or is it in fact the capacity (Coulomb*seconds) of your system. If it is "just" the electrical capacitance (Farad), then the above model will be sufficient.
I hope this helps, but it still might be that I misunderstand something in your problem.
With regards
Petr
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