I want to measure ring current and disk current simultaneously for the determination of H2O2 percentage. What will be the potential applied to ring electrode? Or the ring electrode potential will be scan over the entire region as like disk electrode potential window? It the ring potential constant then what will be the applied potential for different pH electrolytes?
Please help me.
A rotating ring disc electrode (RRDE) study at catalyst modified electrodes,.it is formed as a stable intermediate H2O2 in the potential region. You must be the potential applied to ring electrode in this stable potential region.
Thanks Prof. Che. One have to applied a fixed potential at ring electrode for H2O2 reduction. I have another quarry regarding the magnitude of ring potential. How it will be decided for a catalyst loaded RRDE?
Please help me.
You can loaded a catalyst on the disc electrode, but you can use RRDE with a Pt ring electrode without loaded catalyst for the determination of H2O2.
Thanks Prof. Che. I have understand from your suggestion that one have to run an experiment with bare RRDE with addition of H2O2 and making only connection to ring electrode to determine the potential which will be applied during ORR experiment. Am I right sir? Please inform me.
Dear Santimoy Khilari,
Yes. You can run an experiment with bare RRDE(Pt ring electrode) with addition of H2O2 and making only connection to ring electrode to scan and determine the potential.
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