Journal article

Publication year: 2006

Pages: 1619-1624

Journal: Solid State Ionics

Volume number: 177

Issue number: 19-25

ISSN: 0167-2738

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

Publisher: 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 Citation style: 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 Citation style: 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