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Solid oxide fuel cell redox instability characterized by in situ transmission electron microscopy

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Fuel Cell Modeling and Simulations

François Maréchal, Felix N. Büchi, Nordahl Autissier, Diego Larrain, Dimos Poulikakos, Bernhard Andreaus

Fundamental and phenomenological models for cells, stacks, and complete systems of PEFC and SOFC are reviewed and their predictive power is assessed by comparing model simulations against experiments. Computationally efficient models suited for engineering ...

2004

Fuels for Fuel Cells : Requirements and Fuel Processing

Jan Van Herle, Frédéric Vogel

Polymer electrolyte and solid oxide are the two fuel cell types (PEFC, SOFC) under development in Switzerland. The very distinct operating temperatures of 80 °C (PEFC) and 800–950 °C (SOFC) impose fundamentally different requirements upon the nature of the ...

2004

Energy balance model of a SOFC cogenerator operated with biogas

François Maréchal, Daniel Favrat, Jan Van Herle

A small cogeneration system based on a Solid Oxide Fuel Cell (SOFC) fed on the renewable energy source biogas is presented. An existing farm biogas production site (35 m3 per day), currently equipped with a SOFC demonstration stack, is taken for reference. ...

Elsevier2003

Lanthanide chromite-based sofc anodes

Ravindranathan Thampi, Joseph Sfeir

A SOFC, with a solid electrolyte layer and at least one anode layer constituting a stratified structure. The anode layer incorporates a twice substituted lanthanide chromite, substituted by Sr on A sites and by Ni or Cu on B sites. The stratified structure ...

2003

Alternative anode materials for methane oxidation in solid oxide fuel cells

Joseph Sfeir

Fuel Cells are electrochemical devices that are able to directly convert chemical energy to electrical energy, without any Carnot limitation. Hence, their energy efficiencies are relatively high. Among the various types of fuel cells, solid oxide fuel cell ...

EPFL2002

Materials for Methane-fueled SOFC Systems

Jan Van Herle, Stefan Diethelm, Raphaël Ihringer, Joseph Sfeir

Abstract: A short overview of recent work on electroceramic materials relevant to methane-fueled SOFC systems is given. Various fuel feed options are considered, such as pure methane, biogas, and the addition of reforming agents. The principle and implemen ...

Trans Tech Publications LTD2002

Stability and performance of tape cast anode supported electrolyte (ASE) cells.

Jan Van Herle, Raphaël Ihringer

Recent progress in our development of anode supported electrolyte (ASE) SOFcells is reported. The cells are fabricated by cocasting of aqueous slurries of NiO/YSZ and 8YSZ, followed by cofiring. A gradient cathode is deposited by screenprinting successive ...

European Solid Oxide Fuel Cell Forum2002

LaCro3-Based Anodes for Methane Oxidation

Jan Van Herle, Joseph Sfeir

Electrocatalytic properties of Ca, Sr, Mg, Fe, Co and Ni substituted lanthanum chromites deposited on 8YSZ lelectrolytes were studied using I/V and impedance techniques. The studied parameters were: the sintering temperature, the polarization, the gas and ...

European Solid Oxide Fuel Cell Forum2002

Electrochemical promotion of catalysts for gas phase reactions

Christos Comninellis, György Foti

Recent progress made in our lab. in the field of electrochem. promotion of heterogeneous catalytic gas reactions is reviewed. The phenomenon consists of electrochem. polarization of the catalyst/solid electrolyte interface resulting in a dramatic, non-Fara ...

2000

Concept and technology of SOFC for electric vehicles

Jan Van Herle, Raphaël Ihringer, Chung-Wen Liang

A SOFC concept based on microtubular cells is presented. Mechanical tests and modelling show viability for fast thermal cycling in air for both zirconia and ceria electrolyte tubes. To combine advantages of both these materials, the concept includes a thin ...

2000