To fabricate asymmetric supercapacitor, what should be the properties of metal oxides/hydroxides, polymers to select them as positive or negative electrode? For example, MnO2 used as positive as well as negative electrode in the existing literature.If one choose MnO2 as positive electrode, what are the materials should be its counterpart?
Porous, activated carbons are commonly used as negative electrodes in asymmetric supercapacitors with battery-like positive electrodes.
You can select whether an electrode is positive or negative by comparing the stable potential windows of the two materials against each other, in addition to the OCP.
Thank you for your answer.
Is the work function of the electrode materials plays any role, too? Even type of electrolyte also?
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