Geometric Properties of Nanostructured Solid Oxide Fuel Cell Electrodes
نویسندگان
چکیده
منابع مشابه
A new approach to microstructure optimization of solid oxide fuel cell electrodes
Designing optimal microstructures for solid oxide fuel cell (SOFC) electrodes is complicated due to the multitude of electro-chemo-physical phenomena taking place simultaneously that directly affect working conditions of a SOFC electrode and its performance. In this study, a new design paradigm is presented to obtain a balance between electrochemical sites in the form of triple phase boundary (...
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Considerable attention has been focused on solid oxide fuel cells (SOFCs) due to their potential for providing clean and reliable electric power. However, the high operating temperatures of current SOFCs limit their adoption in mobile applications. To lower the SOFC operating temperature, we fabricated a corrugated thin-film electrolyte membrane by nanosphere lithography and atomic layer deposi...
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The governing reaction mechanisms, and the electrode material compositions and structures, that controls the efficiency of the solid oxide fuel cells (SOFC) and solid oxide electrolysis cells (SOEC) need to be identified and well-understood for significant technological improvements. Our study on the oxygen electrodes focuses on specifically the effect of electrode crystal structure and morphol...
متن کاملInvestigation of surface Sr segregation in model thin film solid oxide fuel cell perovskite electrodes
While SOFC perovskite oxide cathodes have been the subject of numerous studies, the critical factors governing their kinetic behavior have remained poorly understood. This has been due to a number of factors including the morphological complexity of the electrode and the electrodeelectrolyte interface as well as the evolution of the surface chemistry with varying operating conditions. In this w...
متن کاملIn 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...
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ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2013
ISSN: 0013-4651,1945-7111
DOI: 10.1149/2.057303jes