Three-dimensional reconstruction of a solid-oxide fuel-cell anode

2006 ◽  
Vol 5 (7) ◽  
pp. 541-544 ◽  
Author(s):  
James R. Wilson ◽  
Worawarit Kobsiriphat ◽  
Roberto Mendoza ◽  
Hsun-Yi Chen ◽  
Jon M. Hiller ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Three Dimensional Reconstruction ◽  
Dimensional Reconstruction ◽  
Cell Anode ◽  
Fuel Cell Anode

Three-dimensional microstructural changes in the Ni–YSZ solid oxide fuel cell anode during operation

2012 ◽  
Vol 60 (8) ◽  
pp. 3491-3500 ◽  
Author(s):  
George J. Nelson ◽  
Kyle N. Grew ◽  
John R. Izzo ◽  
Jeffrey J. Lombardo ◽  
William M. Harris ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Microstructural Changes ◽  
Cell Anode ◽  
Fuel Cell Anode

Lattice Boltzmann Modeling of Three-Dimensional, Multicomponent Mass Diffusion in a Solid Oxide Fuel Cell Anode

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Abhijit S. Joshi ◽  
Kyle N. Grew ◽  
John R. Izzo ◽  
Aldo A. Peracchio ◽  
Wilson K. S. Chiu
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Effective Diffusivity ◽  
Mass Diffusion ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Cell Anode ◽  
Fuel Cell Anode

The lattice Boltzmann method (LBM) was used to study the three-dimensional (3D) mass diffusion of three species (H2, H2O, and N2) in the pore phase of a porous solid oxide fuel cell (SOFC) anode. The method used is an extension of a two-dimensional (2D) LBM model (2007, “Lattice Boltzmann Method for Continuum, Multi-Component Mass Diffusion in Complex 2D Geometries,” J. Phys. D, 40, pp. 2961–2971) to study mass transport in SOFC anodes (2007, “Lattice Boltzmann Modeling of 2D Gas Transport in a Solid Oxide Fuel Cell Anode,” J. Power Sources, 164, pp. 631–638). The 3D porous anode geometry is initially modeled using a set of randomly packed and overlapping solid spheres. Results using this simple geometry model are then compared with results for an actual SOFC anode geometry obtained using X-ray computed tomography (XCT) at sub-50 nm resolution. The effective diffusivity Deff of the porous anode is a parameter, which is widely used in system-level models. However, empirical relationships often used to calculate this value may not be accurate for the porous geometry that is actually used. Solution of the 3D Laplace equation provides a more reliable and accurate means to estimate the effective diffusivity for a given anode geometry. The effective diffusivity is calculated for different geometries and for a range of porosity values, both for the 3D sphere packing model and for the real geometry obtained by XCT. The LBM model is then used to predict species mole fractions within the spherical packing model geometry and the XCT geometry. The mole fraction variation is subsequently used to calculate the concentration polarization. These predictions compare well with previously obtained 2D results and with results reported in the literature. The 3D mass transport model developed in this work can be eventually coupled with other transport models and be used to optimize the anode microstructure geometry.

Analysis of the three-dimensional microstructure of a solid-oxide fuel cell anode using nano X-ray tomography

2011 ◽  
Vol 196 (4) ◽  
pp. 1915-1919 ◽  
Author(s):  
Yong Guan ◽  
Wenjie Li ◽  
Yunhui Gong ◽  
Gang Liu ◽  
Xiaobo Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Three Dimensional ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
X Ray ◽  
Cell Anode ◽  
Fuel Cell Anode
Sign in / Sign up

Export Citation Format

Share Document