Understanding the thermo-mechanical behaviour of solid oxide fuel cell anodes using synchrotron X-ray diffraction

In Situ Synchrotron X-ray Spectroscopy of Lanthanum Manganite Solid Oxide Fuel Cell Electrodes

We investigated the underlying physical and chemical causes of the improvement of electrochemical activity of the cathode in solid oxide fuel cells (SOFC) under long term cathodic or anodic polarization, termed ‘current conditioning’, through in situ X-ray absorption spectroscopy (XAS). The electrodes were powder La0.8Sr0.2MnO3 (LSM) made with glycine-nitrate process and thin films of LSM and L...

Redox instability, mechanical deformation, and heterogeneous damage accumulation in solid oxide fuel cell anodes

Microstructural coarsening effects on redox instability and mechanical damage in solid oxide fuel cell anodes

X-ray micro Laue diffraction tomography analysis of a solid oxide fuel cell1

The relevance of micro Laue diffraction tomography (µ-LT) to investigate heterogeneous polycrystalline materials has been studied. For this purpose, a multiphase solid oxide fuel cell (SOFC) electrode composite made of yttria-stabilized zirconia and nickel oxide phases, with grains of about a few micrometres in size, has been analyzed. In order to calibrate the Laue data and to test the techniq...

Quantifying the Role of Cerium Oxide as a Catalyst in Solid Oxide Fuel Cell Anodes

Title of Document: QUANTIFYING THE ROLE OF CERIUM OXIDE AS A CATALYST IN SOLID OXIDE FUEL CELL ANODES Steven C. DeCaluwe, Doctor of Philosophy, 2009 Directed By: Associate Professor Gregory S. Jackson, Department of Mechanical Engineering Solid Oxide Fuel Cells (SOFCs) are an important electrochemical power conversion device, due largely to their high efficiencies and ability to directly oxidiz...