I have done ORR LSV (attached file) at different RPM (400-2000) in 0.1M KOH electrolyte (PH=13) using RDE. My teacher said that it is wrong due to limiting current density. Kindly give me your kind suggestions. Is it really wrong or we just say low limiting current density and can be published in the paper?
Arman Bonakdarpour
Dear Anand,
You clearly reach limiting current densities, but their magnitude seem to be low. With oxygen-saturated aqueous electrolytes you should be able to get limiting current densities which can be calculated by the Levich equation. For the 400, 900 and 1600 rpm, the geometric current densities turn out to be about: 3, 4.5, and 6 mA/cm^2.
Best,
Arman
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Anand Parkash
Dear Sir, Arman Bonakdarpour, Thank so you much for your kind answer.
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