Journalartikel

Jahr der Veröffentlichung: 2006

Seiten: 1619-1624

Zeitschrift: Solid State Ionics

Bandnummer: 177

Heftnummer: 19-25

ISSN: 0167-2738

DOI Link: https://doi.org/10.1016/j.ssi.2005.11.021

Verlag: Elsevier

Abstract: 
The kinetics of the electrochemical reduction of molecular nitrogen at gold micro electrodes on yttria stabilized zirconia (YSZ) solid oxide electrolyte is studied by steady state polarization measurements. From the eta/lg i plot for both cathodic and anodic polarization the apparent transfer coefficients alpha(a) and alpha(c) are evaluated. The sum of alpha(a)+alpha(c) exceeds unity and thus a multistep electron transfer process is suggested. The concept of the stoichiometric number is applied to the electrode reaction N-2 + 6e(-) = 2N(3-) supposing that the overall process involves at least two intermediate species. On the basis of the evaluation of the experimental results the reaction N-2(-) + e(-) reversible arrow N-2(2-) is suggested as the rate determining reaction step for the cathodic nitrogen reduction and nitride formation.

Harvard-Zitierstil: Valov, I. and Janek, J. (2006) Kinetic studies of the electrochemical nitrogen reduction and incorporation into yttria stabilized zirconia, Solid State Ionics, 177(19-25), pp. 1619-1624. https://doi.org/10.1016/j.ssi.2005.11.021

APA-Zitierstil: Valov, I., & Janek, J. (2006). Kinetic studies of the electrochemical nitrogen reduction and incorporation into yttria stabilized zirconia. Solid State Ionics. 177(19-25), 1619-1624. https://doi.org/10.1016/j.ssi.2005.11.021