Most of the reported literature have used saturated calomel electrode rather than Ag/AgCl as a reference electrode while working with metal oxide based electrode material. what could be the possible reason behind it?
Dear Surbhi Anand . This electrode allows for the activity to be fixed by the potassium chloride and the voltage to be lower and closer to the SHE. This saturated solution allows for the exchange of chlorine ions to take place. See the link: https://www.corrosionpedia.com/definition/1218/saturated-calomel-electrode-sce
Also, This electrode can be relatively easier to make and maintain compared to the SHE. See the link: https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Electrochemistry/Electrodes/Standard_Hydrogen_Electrode
for alcaline solutions the Hg/HgO/OH- electrode should be used to avoid the influence of Cl- ions on the electrolyte content, and moreover, to avoid the changes of reference electrode potential during measurements.
- Badges
- Science method
- Similar topics
- Methodology
- Crystallography
- X-ray Diffraction