Show simple item record

dc.contributor.authorChen, Kongfa
dc.contributor.authorAi, Na
dc.contributor.authorJiang, San Ping
dc.identifier.citationChen, Kongfa and Ai, Na and Jiang, San Ping. 2012. Performance and stability of (La,Sr)MnO3-Y2O3-ZrO2 composite oxygen electrodes under solid oxide electrolysis cell operation conditions. International Journal of Hydrogen Energy. 37 (14): pp. 10517-10525.

The electrochemical performance and stability of (La,Sr)MnO3–Y2O3–ZrO2 (LSM-YSZ) composite oxygen electrodes is studied in detail under solid oxide electrolysis cells (SOECs) operation conditions. The introduction of YSZ electrolyte phase to form an LSM-YSZ composite oxygen electrode substantially enhances the electrocatalytic activity for oxygen oxidation reaction. However, the composite electrode degrades significantly under SOEC mode tested at 500 mA cm−2 and 800 °C. The electrode degradation is characterized by deteriorated surface diffusion and oxygen ion exchange and migration processes. The degradation in electrode performance and stability is most likely associated with the breakup of LSM grains and formation of LSM nanoparticles at the electrode/electrolyte interface, and the formation of nano-patterns on YSZ electrolyte surface under the electrolysis polarization conditions. The results indicate that it is important to minimize the direct contact of LSM particles and YSZ electrolyte at the interface in order to prevent the detrimental effect of the LSM nanoparticle formation on the performance and stability of LSM-based composite oxygen electrodes.

dc.publisherElsevier Ltd
dc.subjectLSM-YSZ composite oxygen
dc.subjectNanoparticles formation
dc.subjectSolid oxide electrolysis cells
dc.titlePerformance and stability of (La,Sr)MnO3-Y2O3-ZrO2 composite oxygen electrodes under solid oxide electrolysis cell operation conditions
dc.typeJournal Article
dcterms.source.titleInternational Journal of Hydrogen Energy
curtin.accessStatusFulltext not available

Files in this item


This item appears in the following Collection(s)

Show simple item record