Chromium deposition and poisoning of LSCF and LSM oxygen electrodes of solid oxide electrolysis cells
MetadataShow full item record
The degradation of solid oxide electrolysis cells (SOECs) is an issue of both scientific and technical importance. In this study, chromium deposition and poisoning at La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF) and La0.8Sr0.2MnO3+d (LSM) oxygen electrodes are studied under SOEC operation conditions at 800 oC. Performance degradation was observed for the reaction in the presence of Fe-Cr alloy metallic interconnect. The results indicate the deposition of SrCrO4, CrO2.5 and Cr2O3 phases on the surface of LSCF oxygen electrodes and YSZ electrolyte surface and on the LSM electrode inner surface. Cr deposition is closely related to the increased segregation of SrO species under anodic polarization conditions.
Showing items related by title, author, creator and subject.
Effect of strontium content on chromium deposition and poisoning in Ba1-xSrxCo0.8Fe0.2O3-δ (0.3≤ x ≤0.7) cathodes of solid oxide fuel cellsKim, Y.; Chen, X.; Jiang, San Ping; Bae, J. (2012)The effect of strontium content on Cr deposition and poisoning in barium strontium cobalt ferrite electrodes, Ba1−xSrxCo0.8Fe0.2O3−δ (BSCF, 0.3 ≤ x ≤ 0.7), was investigated at 900°C for 20 h with a cathodic polarization ...
Chromium deposition and poisoning of La0.8Sr0.2MnO3 oxygen electrodes of solid oxide electrolysis cellsChen, K.; Hyodo, J.; Dodd, A.; Ai, N.; Ishihara, T.; Jian, L.; Jiang, San Ping (2015)The effect of the presence of an Fe–Cr alloy metallic interconnect on the performance and stability of La0.8Sr0.2MnO3 (LSM) oxygen electrodes is studied for the first time under solid oxide electrolysis cell (SOEC) operating ...
Effect of SO2 Poisoning on the Electrochemical Activity of La0.6Sr0.4Co0.2Fe0.8O3-δ Cathodes of Solid Oxide Fuel CellsWang, C.; He, S.; Chen, K.; Rowles, Matthew; Darvish, S.; Zhong, Y.; Jiang, San Ping (2017)The effect of sulfur deposition and poisoning on the electrochemical activity of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode of solid oxide fuel cells (SOFCs) for the O2 reduction reaction is studied under accelerated ...