Type Potential (vs SHE) /V Ref
Ag/AgCl (0.1 M KCl) 0.2881 1
Ag/AgCl (1.0 M KCl) 0.235 1
Ag/AgCl (Sat'd KCl) 0.197 2
Calomel (0.1M KCl) 0.3337 2
Calomel (1.0M KCl) 0.2801 2
Calomel (SCE, Sat'd KCl) 0.2412 2
Hg/HgSO4 (Sat'd K2SO4) 0.64 2
Hg/HgO (0.1M NaOH) 0.149 3
Hg/HgO (1.0M NaOH) 0.108 3
RHE −(2.303RT/F)·pH 4


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[1] Meites, Louis. Handbook of Analytical Chemistry, United States, McGraw-Hill Book Company (1963)
[2] Bard, A. J., Faulkner, L. R. Electrochemical Methods: Fundamentals and Applications, 2nd Edition. United States: John Wiley & Sons (2000)
[3] Kawashima, Kenta, et al. "Accurate Potentials of Hg/HgO Electrodes: Practical Parameters for Reporting Alkaline Water Electrolysis Overpotentials." ACS Catalysis 13 (2023): 1893-1898
[4] Bard, A. J., Faulkner, L. R. and White, H. S. Electrochemical Methods: Fundamentals and Applications, 3rd Edition. United States: John Wiley & Sons (2022)