𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Kinetics for oxygen reduction at platinum, palladium and silver electrodes

✍ Scribed by D.T. Sawyer; R.J. Day

Publisher
Elsevier Science
Year
1963
Tongue
English
Weight
268 KB
Volume
8
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

✦ Synopsis

The electrochemical reduction of dissolved oxygen at pre-oxidized and pre~reduced metal electrodes has been studied using the galvanostatic and chronopotentiometric methods. Oxygen reduction at pre-oxidized electrodes occurs by a pH-dependent mechanism that gives water as the reduction product. With pre-reduced electrodes in acidic solutions, oxygen is reduced to hydrogen peroxide by a pH-independent mechanism. The kinetic parameters for these two mechanisms have been determined at platinum, palladium and silver electrodes.

πŸ“œ SIMILAR VOLUMES

Mechanisms for the evolution and ionizat
Mechanisms for the evolution and ionization of oxygen at platinum electrodes
✍ A.C. Riddiford πŸ“‚ Article πŸ“… 1961 πŸ› Elsevier Science 🌐 English βš– 601 KB

By considering published data on the kinetics of the oxygen electrode at a platinum surface it is suggested that the electrode process follows the same path in both acid and alkaline solution. This path is identified, and attention is drawn to certain restrictions on the use of diagnostic criteria.

Different views regarding the kinetics a
Different views regarding the kinetics and mechanisms of oxygen reduction at Pt and Pd electrodes
✍ D.B. Sepa; M.V. Vojnovic; Lj.M. Vracar; A. Damjanovic πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 600 KB

Two diametrically different pH dependences have been reported for oxygen reduction at prereduced Pt electrodes. In the current density (cd) region with the Tafel slope of -2.3RT/F, the pH dependence expressed as dE/dpH is, according to one group of workers, -90 mV, ie -3 x 2.3 RT/(2F) and -30 mV, ie