Question

What may be the problem if the ring current is not coming in the rrde technique

Answer 1

I am also using ~100mL cell with 5mm GC electrode from Pine Instruments, I would say after Ar-gas purging first (as Aditi said), then purge oxygen for 1 hour and keep the oxygen flow on the surface of electrolyte to cover the surface with oxygen bubbles while doing RDE-polarization curves. It would improve the currents at higher RPM

Answer 2

Answer:

thanks Raksha for your answer