standard hydrogen electrode

https://doi.org/10.1351/goldbook.S05917
For solutions in protic solvents, the universal reference electrode for which, under standard conditions, the standard electrode potential (H+ / H2) is zero at all temperatures. The absolute electrode potential of the hydrogen electrode under standard conditions can be expressed in terms of thermodynamic quantities by applying a suitable Born–Haber cycle, thus: E⚬(H+/H2)(abs)=ΔatG⚬+ΔionG⚬+αH+o,SF where ΔatG⚬ and ΔionG⚬ are the atomization and ionization Gibbs energies of H2, αH+o,S is the real potential of H2 in solvent S and F is the Faraday constant. The recommended absolute electrode potential of the hydrogen electrode is: E⚬(H+/H2)H2O(abs)=(4.44±0.02) Vat298.15 K
Source:
PAC, 1986, 58, 955. (The absolute electrode potential: an explanatory note (Recommendations 1986)) on page 957 [Terms] [Paper]
Citation: 'standard hydrogen electrode' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05917 RIS BibTex EndNote
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