Oxygen reduction on a ruthenium electrode in acid electrolytes
Само за регистроване кориснике
1986
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The kinetics and mechanism of O2 reduction on an Ru electrode in acid electrolytes have been measured by using a disc—ring method. The reaction proceeds through a “parallel” mechanism with the exchange of approximately four electrons. It shows a pronounced dependence on the oxidation state of the Ru surface. A catalytic decomposition of H2O2 does not occur on the surface obtained at potentials E > 0.0 V. Tafel slopes, some rate constants and reaction orders for O2 and H2O2 reduction have been determined. Calculated rate constant for a direct reduction of O2 (k1) is higher than k2, the reduction with the H2O2 intermediate. The experimental value of k3, the H2O2 reduction, is lower than k1 and k2 at E > 0.05 V. The Tafel slope for O2 reduction with the value higher than 120 mV has been obtained.
Кључне речи:
Oxygen reduction / Electrochemistry / Ru electrode / KineticsИзвор:
Electrochimica Acta, 1986, 39, 9, 1125-1130Издавач:
- Elsevier
Финансирање / пројекти:
- Department of Energy, Washington, U.S.A., Contract, Energy 427
Институција/група
IHTMTY - JOUR AU - Anastasijević, Nikola A. AU - Dimitrijević, Z. M. AU - Adžić, Radoslav R. PY - 1986 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4177 AB - The kinetics and mechanism of O2 reduction on an Ru electrode in acid electrolytes have been measured by using a disc—ring method. The reaction proceeds through a “parallel” mechanism with the exchange of approximately four electrons. It shows a pronounced dependence on the oxidation state of the Ru surface. A catalytic decomposition of H2O2 does not occur on the surface obtained at potentials E > 0.0 V. Tafel slopes, some rate constants and reaction orders for O2 and H2O2 reduction have been determined. Calculated rate constant for a direct reduction of O2 (k1) is higher than k2, the reduction with the H2O2 intermediate. The experimental value of k3, the H2O2 reduction, is lower than k1 and k2 at E > 0.05 V. The Tafel slope for O2 reduction with the value higher than 120 mV has been obtained. PB - Elsevier T2 - Electrochimica Acta T1 - Oxygen reduction on a ruthenium electrode in acid electrolytes VL - 39 IS - 9 SP - 1125 EP - 1130 DO - 10.1016/0013-4686(86)80124-4 ER -
@article{ author = "Anastasijević, Nikola A. and Dimitrijević, Z. M. and Adžić, Radoslav R.", year = "1986", abstract = "The kinetics and mechanism of O2 reduction on an Ru electrode in acid electrolytes have been measured by using a disc—ring method. The reaction proceeds through a “parallel” mechanism with the exchange of approximately four electrons. It shows a pronounced dependence on the oxidation state of the Ru surface. A catalytic decomposition of H2O2 does not occur on the surface obtained at potentials E > 0.0 V. Tafel slopes, some rate constants and reaction orders for O2 and H2O2 reduction have been determined. Calculated rate constant for a direct reduction of O2 (k1) is higher than k2, the reduction with the H2O2 intermediate. The experimental value of k3, the H2O2 reduction, is lower than k1 and k2 at E > 0.05 V. The Tafel slope for O2 reduction with the value higher than 120 mV has been obtained.", publisher = "Elsevier", journal = "Electrochimica Acta", title = "Oxygen reduction on a ruthenium electrode in acid electrolytes", volume = "39", number = "9", pages = "1125-1130", doi = "10.1016/0013-4686(86)80124-4" }
Anastasijević, N. A., Dimitrijević, Z. M.,& Adžić, R. R.. (1986). Oxygen reduction on a ruthenium electrode in acid electrolytes. in Electrochimica Acta Elsevier., 39(9), 1125-1130. https://doi.org/10.1016/0013-4686(86)80124-4
Anastasijević NA, Dimitrijević ZM, Adžić RR. Oxygen reduction on a ruthenium electrode in acid electrolytes. in Electrochimica Acta. 1986;39(9):1125-1130. doi:10.1016/0013-4686(86)80124-4 .
Anastasijević, Nikola A., Dimitrijević, Z. M., Adžić, Radoslav R., "Oxygen reduction on a ruthenium electrode in acid electrolytes" in Electrochimica Acta, 39, no. 9 (1986):1125-1130, https://doi.org/10.1016/0013-4686(86)80124-4 . .