The kinetics of hydrogen evolution on black platinum electrodes during the electrolysis of molten potassium bisulphate. The formation of a reversible hydrogen electrode
✍ Scribed by A.J. Arvía; A.J. Calandra; H.A. Videla
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- English
- Weight
- 545 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The discharge of hydrogen ions on black platinum electrodes durmg the electrolysis of molten potassmm blsulphate was examined by means of potential/current-denslty curves and observation of the decay of overpotential
The results Indicate that the mechamsm of reactlon mvolves a recombmatlon reaction with hydrogen atoms on the black platinum surface as the rate-determmmg step Due to the reverslblhty of the electrode reactlon, a reversible hydrogen electrode m the melt was obtained, the potential of which was determined against a sdver/dver-ion reference electrode R&nun&On a etudlB la d6charge des ions hydrogkne sur des Clectrodes de nolr de platme durant l'&ctrolyse du blsulphate de potassium fondu, en mesurant les courbes courant-tension et la dlmmutlon de la surtension Les r&ultats mdlquent que le m6camsme de la reactIon lmphque une reaction de recombmalson des atomesd'hydrog&ne sur la surface du nolr de platme constltuant l%tape regulatrice Etant don& la reverslblhte de la r&action d'&ctrode, on a obtenu une &&rode r&erslble d'hydrogkne dans le se1 fondu, dont le potentlel fut determine au moyen d'une electrode de rkference argention-argent Zusammenfassung-Die Entladung von Wasserstoffionen an Elektroden aus Pt-Schwarz wurde be1 der Elektrolyse von geschmolzenem Kahumblsulfat mlttels Strom-Spannungs Kurven und Beobachtung des Abkhngens der Uberspannung untersucht
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Ahstrae-Kinetics of the hydrogen evolution reaction (her) were measured at a rhodium electrode in a 1 M solution of KOH at various temperatures between 5 and 75°C. The rn-ts were conducted at a Rh wire electrode activated before every measurement by cycling in the range of potentials between -1.0 an