Evaluation of strontium substituted lanthanum manganite-based solid oxide fuel cell cathodes using cone-shaped electrodes and electrochemical impedance spectroscopy
نویسندگان
چکیده
منابع مشابه
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...
متن کاملnbiased characterization of three-phase microstructure of porous lanthanum oped strontium manganite/yttria-stabilized zirconia composite cathodes for olid oxide fuel cells using atomic force microscopy and stereology
Microstructural characteristics of porous LSM/YSZ composite cathodes greatly influence the performance of solid oxide fuel cells. The triple phase boundaries, for example, account for a significant portion of the electrochemically active sites in these porous composite cathodes. Nonetheless, experimental characterization of the relevantmicrostructural attributes has been problematic due to lack...
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An efficient procedure is presented for the evaluation of solid oxide fuel cell (SOFC) anode microstructure triple phase boundary length (TPBL). Triple phase boundary- the one that is common between three phases of the microstructure- has a great influence on the overall efficiency of SOFC because all electrochemical reactions of anode take place in its vicinity. Therefore, evaluation of TP...
متن کاملEvaluation of solid oxide fuel cell anode based on active triple phase boundary length and tortuosity
An efficient procedure is presented for the evaluation of solid oxide fuel cell (SOFC) anode microstructure triple phase boundary length (TPBL). Triple phase boundary- the one that is common between three phases of the microstructure- has a great influence on the overall efficiency of SOFC because all electrochemical reactions of anode take place in its vicinity. Therefore, evaluation of TP...
متن کاملFactors governing oxygen reduction in solid oxide fuel cell cathodes.
Recent worldwide interest in building a decentralized, hydrogen-based energy economy has refocused attention on the solid oxide fuel cell (SOFC) as a potential source of efficient, environmentally friendly, fuel-versatile electric power. Due to its high operating temperature, the SOFC offers several potential advantages over polymer-based fuel cells, including reversible electrode reactions, lo...
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ژورنال
عنوان ژورنال: Journal of Electrochemical Science and Engineering
سال: 2018
ISSN: 1847-9286
DOI: 10.5599/jese.503