TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Neidhardt, Jonathan Philipp
A1  - Bessler, Wolfgang G.
T1  - Microkinetic Modeling of Nickel Oxidation in Solid Oxide Cells: Prediction of Safe Operating Conditions
JF  - Chemie Ingenieur Technik
N2  - Oxidation of the nickel electrode is a severe aging mechanism of solid oxide fuel cells (SOFC) and solid oxide electrolyzer cells (SOEC). This work presents a modeling study of safe operating conditions with respect to nickel oxide formation. Microkinetic reaction mechanisms for thermochemical and electrochemical nickel oxidation are integrated into a 2D multiphase model of an anode‐supported solid oxide cell. Local oxidation propensity can be separated into four regimes. Simulations show that the thermochemical pathway generally dominates the electrochemical pathway. As a consequence, as long as fuel utilization is low, cell operation considerably below electrochemical oxidation limit of 0.704 V is possible without the risk of reoxidation.
KW  - Modeling
KW  - Nickel oxidation
KW  - Numerical simulation
KW  - Solid oxide electrolyzer cell
KW  - Solid oxide fuel cell
Y1  - 2019
UR  - https://onlinelibrary.wiley.com/doi/full/10.1002/cite.201800197
SN  - 1522-2640 E-ISSN
SS  - 1522-2640 E-ISSN
SN  - 0009-286X P-ISSN
SS  - 0009-286X P-ISSN
U6  - https://doi.org/10.1002/cite.201800197
DO  - https://doi.org/10.1002/cite.201800197
VL  - 91
IS  - 6
SP  - 843
EP  - 855
PB  - Wiley Online Library
ER  -