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Antonin Faes

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Publications associées (43)

Fabrication of structured anode-supported solid oxide fuel cell by powder injection molding

Amédée Zryd, Jan Van Herle, Zacharie Wuillemin, Antonin Faes

Powder Injection Molding (PIM) gives the possibility to produce, at an industrial rate, ceramic parts with fine details. It is thus a possible approach to reduce the fabrication costs of Solid Oxide Fuel Cells (SOFCs). This work presents fabrication and el ...

2013

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

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes

Microstructural evolution in solid oxide fuel cell (SOFC) cermet anodes has been investigated using X-ray nanotomography along with differential absorption imaging. SOFC anode supports composed of Ni and yttria-stabilized zirconia (YSZ) were subjected to e ...

2012

A Review of RedOx Cycling of Solid Oxide Fuel Cells Anode

Aïcha Hessler-Wyser, Amédée Zryd, Jan Van Herle, Antonin Faes

Solid oxide fuel cells are able to convert fuels, including hydrocarbons, to electricity with an unbeatable efficiency even for small systems. One of the main limitations for long-term utilization is the reduction-oxidation cycling (RedOx cycles) of the ni ...

2012

Compilation of mechanical properties for the structural analysis of solid oxide fuel cell stacks. Constitutive materials of anode-supported cells

Jan Van Herle, Arata Nakajo, Antonin Faes

The mechanical failure of one cell is sufficient to lead to the end of service of a solid oxide fuel cell (SOFC) stack. Therefore, there is growing interest in gaining knowledge on the mechanical properties of the cell materials for stress analysis. This s ...

2012

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

Aïcha Hessler-Wyser, Jan Van Herle, 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

Redox stable Ni–YSZ anode support in solid oxide fuel cell stack configuration

Jan Van Herle, Zacharie Wuillemin, Antonin Faes, Pietro Tanasini, Nicola Accardo

State-of-the-art nickel-based SOFC anode-supported cells are highly sensitive to reoxidation of the metal phase at the temperature of utilization. This work presents results on redox stable nickel–YSZ (yttria- stabilized zirconia) anode-supported cells, fo ...

Elsevier2011

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

Stefan Diethelm, Aïcha Hessler-Wyser, Jan Van Herle, Zacharie Wuillemin, Marco Cantoni, Antonin Faes, 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

RedOx Stability of Anode Supported Solid Oxide Fuel Cells

Antonin Faes

The weakness of nickel-based solid oxide fuel cell anodes is their low ability to withstand re-oxidation at working temperature, especially for the anode-supported cell design. The volume expansion coming along with nickel (Ni) oxidation induces stresses i ...

EPFL2011

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

Aïcha Hessler-Wyser, Jan Van Herle, Zacharie Wuillemin, Antonin Faes, 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 I: Microstructure optimization

Aïcha Hessler-Wyser, Jean-Marie Fuerbringer, Jan Van Herle, Antonin Faes, Driss Mohamedi

The main drawback of Ni/YSZ anode supports for solid oxide fuel cell application is their low tolerance to reducing and oxidizing (RedOx) atmosphere changes, owing to the Ni/NiO volume variation. This work describes a structured approach based on design of ...

Elsevier2011

Strength of Anode-Supported Solid Oxide Fuel Cells

Antonin Faes, Andreas Kaiser

Nickel oxide and yttria doped zirconia composite strength is crucial for anode-supported solid oxide fuel cells, especially during transient operation, but also for the initial stacking process, where cell curvature after sintering can cause problems. This ...

Wiley-Blackwell2011

Curvature and Strength of Ni-YSZ Solid Oxide Half-cells after RedOx Treatments

Antonin Faes, Andreas Kaiser, Darlene Goldstein

One of the main drawbacks of anode-supported solid oxide fuel cell technology is the limited capability to withstand reduction and oxidation (“RedOx”) of the Ni phase. This study compares the effect of RedOx cycles on curvature and strength of half-cells, ...

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa2010

The in vivo performance of magnetic particle-loaded injectable, in situ gelling, carriers for the delivery of local hyperthermia

Olivier Jordan, Heinrich Hofmann, Antonin Faes, Alke Fink, Daniel Ruefenacht

In situ forming implants are attractive for minimally invasive localized therapies such as aneurysm embolization. As for the superparamagnetic iron oxide nanoparticles (SPIONs), their deposition/injection in a target tissue area allows magnetically induced ...

2010

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes, Quentin Thomas Jeangros

Solid Oxide Fuel Cells (SOFC) common technology is based on anode- supported cells composed of nickel-yttria stabilized zirconia (Ni-YSZ) cermet. The nickel is in oxide state (NiO) during SOFC production and is reduced to metallic nickel during the first o ...

2009

Nickel-Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes

Microstructural evolution of anode supported solid oxide fuel cells (SOFC) during medium-term stack testing has been characterized by scanning electron microscopy (SEM). Low acceleration voltage SEM imaging is used to separate the three anode phases (nicke ...

2009

Experimental and Theoretical Investigation of Degradation Mechanisms in SOFC Electrodes

Aïcha Hessler-Wyser, Christos Comninellis, Jan Van Herle, Antonin Faes, Pietro Tanasini

Performance degradation data obtained on single solid oxide fuel cells tested at 850°C with air and humidified H2 and using Ni-YSZ anode supported cells are presented. Microscopic investigation is carried out on both anode and cathode to quantify variation ...

2009

RedOx study of anode supported solid oxide fuel cell

Aïcha Hessler-Wyser, Jan Van Herle, Arata Nakajo, Antonin Faes, David Dubois

The common technology for solid oxide fuel cells (SOFC) is based on a cermet (ceramic-metal composite) anode of nickel with yttria stabilized zirconia (YSZ), often used as the supporting structure. One of the main limitations of this technology is the tole ...

2009

In situ Reduction and Oxidation of Nickel from Solid Oxide Fuel Cells in a Transmission Electron Microscope

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes, Quentin Thomas Jeangros

Environmental transmission electron microscopy was used to characterize in situ the reduction and oxidation of nickel from a Ni/YSZ solid oxide fuel cell anode support between 300-500°C. The reduction is done under low hydrogen pressure. The reduction init ...

2009

Redox study of anode supported solid oxide fuel cell

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes

The common technology for solid oxide fuel cells (SOFC) is based on a cermet anode of nickel with yttrium stabilized zirconia (YSZ), often used as the supporting structure. One of the main limitations of this anode technology is the redox tolerance. In thi ...

2008

Quantitative study of anode microstructure related to SOFC stack degradation

Aïcha Hessler-Wyser, Jan Van Herle, Antonin Faes

As the performances of Solid Oxide Fuel Cells (SOFC) get attractive, long term degradation becomes the main issue for this technology. Therefore it is essential to localise the origin of degradation and to understand its processes in order to find solution ...

Springer-Verlag2008

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