In order to check whether our ORR, OER and HER results are good or bad we need theoretical results.
You need to compare them with the noble catalysts like Pt/C for ORR and HER and Ir/C for OER.
I can suggest you to look into some review articles and know the conversion between reference electrodes will be helpful for you.
All the best,
santosh
You should compare ORR, OER and HER activities to polycrystalline Platinum. Normalize the activites to the ECSA.
All these reactions are pH dependent. Compare the activities to a pH-independet reference reactions like Ag/AgCl is not a easy, as you cannot compare activities measured in different pH-solutions without compensating for voltage shifts due to the change of pH. Instead, measure the RHE in the solution you are working in and describe all activities relative that value. This is standard practice.
Article Establishing the potential dependent equilibrium oxide cover...
The thermaldynamic electrode potentials of ORR/WOR and HOR/HER are at 1.23 V and 0 V (vs. the reversible hydrogen electrode), respectively. And yes, the actual potentials of these redoxs with respect to the Ag/AgCl depends on the pH value of the electrolyte solution. If you cannot prepare a RHE by yourself, just use the Ag/AgCl is ok as long as you calibrate the potentials to the RHE before evaluate your result. the potential relation can be expressed as E(vs. RHE)=E(vs. Ag/AgCl)+0.2+0.059*pH V.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science