scholarly journals Direct Measurement of Triple Phase Boundary on Platinum/Yttria Stabilized Zirconia using Oxygen Isotope and NanoSIMS

2008 ◽  
Keyword(s):  
Phase Boundary ◽  
Oxygen Isotope ◽  
Direct Measurement ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Triple Phase Boundary

scholarly journals A continuum model for yttria-stabilized zirconia incorporating triple phase boundary, lattice structure and immobile oxide ions

2019 ◽  
Vol 23 (10) ◽  
pp. 2907-2926 ◽  
Author(s):  
Petr Vágner ◽  
Clemens Guhlke ◽  
Vojtěch Miloš ◽  
Rüdiger Müller ◽  
Jürgen Fuhrmann
Keyword(s):  
Phase Boundary ◽  
Continuum Model ◽  
Lattice Structure ◽  
Surface Reactions ◽  
Yttria Stabilized Zirconia ◽  
Cyclic Voltammograms ◽  
Stabilized Zirconia ◽  
Triple Phase Boundary ◽  
The Impact ◽  
Oxide Ions

Abstract A continuum model for yttria-stabilized zirconia (YSZ) in the framework of non-equilibrium thermodynamics is developed. Particular attention is given to (i) modeling of the YSZ-metal-gas triple phase boundary, (ii) incorporation of the lattice structure and immobile oxide ions within the free energy model and (iii) surface reactions. A finite volume discretization method based on modified Scharfetter-Gummel fluxes is derived in order to perform numerical simulations. The model is used to study the impact of yttria and immobile oxide ions on the structure of the charged boundary layer and the double layer capacitance. Cyclic voltammograms of an air-half cell are simulated to study the effect of parameter variations on surface reactions, adsorption and anion diffusion.

Oxygen Isotope Transport Properties of Yttria-Stabilized Zirconia (YSZ) in O2- and H2O-Containing Atmospheres

Fuel Cells ◽  
2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
M. J. Pietrowski ◽  
R. A. De Souza ◽  
M. Fartmann ◽  
R. ter Veen ◽  
M. Martin
Keyword(s):  
Transport Properties ◽  
Oxygen Isotope ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia
Sign in / Sign up

Export Citation Format

Share Document