Back قطب الهيدروجين المعياري Arabic Standardna vodikova elektroda BS Elèctrode estàndard d'hidrogen Catalan Electrod hydrogen safonol Welsh Standardwasserstoffelektrode German Electrodo estándar de hidrógeno Spanish Vesinikelektrood Estonian الکترود استاندارد هیدروژن Persian Standardivetyelektrodi Finnish Électrode standard à hydrogène French
In electrochemistry, the standard hydrogen electrode (abbreviated SHE), is a redox electrode which forms the basis of the thermodynamic scale of oxidation-reduction potentials. Its absolute electrode potential is estimated to be 4.44 ± 0.02 V[1] at 25 °C, but to form a basis for comparison with all other electrochemical reactions, hydrogen's standard electrode potential (E°) is declared to be zero volts at any temperature.[2] Potentials of all other electrodes are compared with that of the standard hydrogen electrode at the same temperature.
- ^ Sergio Trasatti, "The Absolute Electrode Potential: an Explanatory Note (Recommendations 1986)", International Union of Pure and Applied Chemistry, Pure & AppL Chem., Vol. 58, No. 7, pp. 955–66, 1986. http://www.iupac.org/publications/pac/1986/pdf/5807x0955.pdf (pdf)
- ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "standard hydrogen electrode". doi:10.1351/goldbook.S05917