TY  - JOUR
AU  - Anastasijević, Nikola A.
AU  - Dimitrijević, Z. M.
AU  - Adžić, Radoslav R.
PY  - 1986
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4200
AB  - The kinetics of oxygen reduction have been studied on a ruthenium electrode in alkaline solutions using the rotating disc and rotating disc-ring methods. The reaction kinetics and mechanism were found to depend on the oxidation state of the ruthenium surface. For a surface having up to two monolayers of oxide a "parallel" mechanism of O2 reduction has been found, which goes predominantly through a four-electron direct reduction to OH-. All the rate constants of the O2 and HO-2 reactions, including those of the adsorption equilibrium of HO-2 on the Ru surface, have been determined. No catalytic decomposition of HO-2 was found. Although the Tafel slope is higher than -120 mV/dec it appears that an initial electron exchange is the rate-determining step. The kinetics are slower on a Ru surface with a thicker oxide layer. The mechanism of the reaction is also different, showing a potential-dependent ratio of the rate constants for a direct and series reduction of O2 and a catalytic decomposition of HO-2.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Oxygen reduction on a ruthenium electrode in alkaline electrolytes
VL  - 199
IS  - 2
SP  - 351
EP  - 364
DO  - 10.1016/0022-0728(86)80009-2
ER  - 

@article{
author = "Anastasijević, Nikola A. and Dimitrijević, Z. M. and Adžić, Radoslav R.",
year = "1986",
abstract = "The kinetics of oxygen reduction have been studied on a ruthenium electrode in alkaline solutions using the rotating disc and rotating disc-ring methods. The reaction kinetics and mechanism were found to depend on the oxidation state of the ruthenium surface. For a surface having up to two monolayers of oxide a "parallel" mechanism of O2 reduction has been found, which goes predominantly through a four-electron direct reduction to OH-. All the rate constants of the O2 and HO-2 reactions, including those of the adsorption equilibrium of HO-2 on the Ru surface, have been determined. No catalytic decomposition of HO-2 was found. Although the Tafel slope is higher than -120 mV/dec it appears that an initial electron exchange is the rate-determining step. The kinetics are slower on a Ru surface with a thicker oxide layer. The mechanism of the reaction is also different, showing a potential-dependent ratio of the rate constants for a direct and series reduction of O2 and a catalytic decomposition of HO-2.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Oxygen reduction on a ruthenium electrode in alkaline electrolytes",
volume = "199",
number = "2",
pages = "351-364",
doi = "10.1016/0022-0728(86)80009-2"
}

Anastasijević, N. A., Dimitrijević, Z. M.,& Adžić, R. R.. (1986). Oxygen reduction on a ruthenium electrode in alkaline electrolytes. in Journal of Electroanalytical Chemistry
Elsevier., 199(2), 351-364.
https://doi.org/10.1016/0022-0728(86)80009-2

Anastasijević NA, Dimitrijević ZM, Adžić RR. Oxygen reduction on a ruthenium electrode in alkaline electrolytes. in Journal of Electroanalytical Chemistry. 1986;199(2):351-364.
doi:10.1016/0022-0728(86)80009-2 .

Anastasijević, Nikola A., Dimitrijević, Z. M., Adžić, Radoslav R., "Oxygen reduction on a ruthenium electrode in alkaline electrolytes" in Journal of Electroanalytical Chemistry, 199, no. 2 (1986):351-364,
https://doi.org/10.1016/0022-0728(86)80009-2 . .