Any solid reference to why sometimes, especially at very low current densities, it takes too long to reach the charging voltage cutoff, while discharge takes place much faster?
dear res
sufficient energy is low , that is with this ions from electrolyte will be troubled in electrode's in nner, which leads to dilute ions or decompose of electrolyte
Because ions in the electrolyte diffuse slowly, supercapacitors sometimes fail to reach voltage cutoff at low current densities. A low current density leads to a plateau in voltage before the cutoff is reached because the ions are not driven quickly enough to the electrodes. The ions will diffuse more readily across the larger surface area in supercapacitors with high specific capacitance.
Thanks a lot, Kiran for your answer. Sound good. Do you have a reference, as in an article or textbook?
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