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


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[1] Bard, A. J., Faulkner, L. R. Electrochemical Methods: Fundamentals and Applications, 2nd Edition. United States: John Wiley & Sons (2000)
[2] Meites, Louis. Handbook of Analytical Chemistry, United States, McGraw-Hill Book Company (1963)
[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