Publication

Sulfur as pollutant species on the cathode side of a SOFC system

Publications associées (129)

Influence of Operational Parameters on LSCF and LSF Stability

(La0.6Sr0.4)0.95FeO3-δ/ Sm0.2Ce0.8O2 (70:30 w/w) and (La0.6Sr0.4)0.995Co0.2Fe 0.8O3-δ/Gd0.1Ce0.9O 2 (50:50 w/w) cathodes screen printed on anode-supported cells were tested for 500 h under different conditions by using a Taguchi matrix that combined cathod ...

2011

Multi-Scale Assessment of Cr Contamination Levels in SOFC Cathode Environment

Jan Van Herle, Christian Ludwig, Aïcha Hessler-Wyser, Zacharie Wuillemin, Josef Andreas Schuler

This study aims to quantify in a holistic approach chromium (Cr) contamination in solid oxide fuel cell (SOFC) stack testing using adapted tools: i) a hot gas sampling method to analyze volatile Cr species in the air flux at the cathode inlet location; ii) ...

Electrochemical Society Inc, 65 S Main St, Pennington, Nj 08534-2839 Usa2011

TEM investigation on zirconate formation and chromium poisoning in LSM/YSZ cathode

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes, Zacharie Wuillemin, Josef Andreas Schuler

Cell durability is a crucial technological issue for SOFC commercialization, and considerable progress has been made in recent years. A number of degradation pathways have been established, amongst which microstructural changes, poisoning effects and forma ...

Springer Verlag2011

Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid oxide fuel cell. Part II: Electrical, electrochemical and microstructural characterization of tape-cast cells

Jan Van Herle, Aïcha Hessler-Wyser, Marco Cantoni, Stefan Diethelm, Antonin Faes, Zacharie Wuillemin, Pietro Tanasini, Henning Lübbe, Nicola Accardo

One of the major limitations of the nickel (Ni) - yttria-stabilized zirconia (YSZ) anode support for solid oxide fuel cells (SOFC) is its low capability to withstand transients between reducing and oxidizing atmospheres ("RedOx" cycle), owing to the Ni-to- ...

Elsevier2011

Impact of Random Geometric Distortions on the Performance and Reliability of an SOFC

Zacharie Wuillemin, Thierry Mikaël Cornu

A method based on Monte Carlo simulations (MCS) is developed to assess the impact of manufacturing tolerances on the performance and reliability of solid oxide fuel cells (SOFCs). Computational fluid dynamics (CFD) simulations of the anode gas diffusion la ...

Wiley-Blackwell2011

Thermodynamics of electromechanically coupled mixed ionic-electronic conductors: Deformation potential, Vegard strains, and flexoelectric effect

Alexander Tagantsev

Strong coupling among external voltage, electrochemical potentials, concentrations of electronic and ionic species, and strains is a ubiquitous feature of solid statemixed ionic-electronic conductors (MIECs), the materials of choice in devices ranging from ...

2011

Analysis of Solid Oxide Fuel Cell LSM-YSZ Composite Cathodes With Varying Starting Powder Sizes

Christos Comninellis, Jan Van Herle, Pietro Tanasini

Solid oxide fuel cell cathodes have been examined using non-destructive x-ray nanotomography. The cathodes examined were a composite of strontium-doped lanthanum manganite (LSM) and yttria-stabilized zirconia (YSZ), with three different starting powder siz ...

2011

Comparison of SOFC cathode microstructure quantified using X-ray nanotomography and focused ion beam scanning electron microscopy

Christos Comninellis, Jan Van Herle, Marco Cantoni, Pietro Tanasini

X-ray nanotomography and focused ion beans scanning electron microscopy (FIB-SEM) have been applied to investigate the complex 3D microstructure of solid oxide fuel cell (SOFC) electrodes at spatial resolutions of 45 nm and below. The application of near e ...

Elsevier2011

Quantitative relationships between composition, particle size, triple phase boundary length and surface area in nickel-cermet anodes for Solid Oxide Fuel Cells

Marco Cantoni

The present study is focusing on the elaboration of the quantitative relationships between the primary microstructural parameters (i.e. the phase volume fractions Phi, the particle and pore sizes and the corresponding size distributions PSD) with the more ...

2011

X-ray Imaging and Analysis of 3D Microstructural Changes in Aged Ni-YSZ Anode

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes

Ni-YSZ anode supports were used to fabricate test cells composed of yttria-stabilised zirconia (YSZ) electrolyte and lanthanum strontium ferrite (LSF) or lanthanum strontium manganite (LSM) / YSZ cathodes. These cells were operated at 720 °C at an average ...

2011

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