I have found that the current density positioned at above the onset potential should be converged with ~ 0 mA/cm2.
In my previous experiment, however, the current density over the on-set potential was formed at a lot higher than ~ 0 mA/cm2.
I used a three electrode system, WE=Pt NPs loaded glassy carbon RDE, CE=Pt mesh, RE=Ag/AgCl, 1600 rpm, electrolyte=HClO4 or H2SO4 both.
Can you teach me why this has happened?
Hatem M.A. Amin
The polarization curves should be corrected for capacitive currents by subtracting the corresponding blank CV recorded in Ar-saturated solution. By doing this simple correction in your curve, your onset will be imposed on the zero line of current. Good luck.
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Jocelyn Legere
I have also found that by decreasing you sweep rate helps this issue.
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