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dc.contributor.authorLi, N.
dc.contributor.authorAi, N.
dc.contributor.authorChen, K.
dc.contributor.authorCheng, Yi
dc.contributor.authorHe, S.
dc.contributor.authorSaunders, M.
dc.contributor.authorDodd, A.
dc.contributor.authorSuvorova, A.
dc.contributor.authorJiang, S.
dc.date.accessioned2017-03-17T08:29:42Z
dc.date.available2017-03-17T08:29:42Z
dc.date.created2017-02-19T19:31:47Z
dc.date.issued2016
dc.identifier.citationLi, N. and Ai, N. and Chen, K. and Cheng, Y. and He, S. and Saunders, M. and Dodd, A. et al. 2016. In situ assembled La<inf>0.8</inf>Sr<inf>0.2</inf>MnO<inf>3</inf> cathodes on a Y<inf>2</inf>O<inf>3</inf>-ZrO<inf>2</inf> electrolyte of solid oxide fuel cells-interface and electrochemical activity. RSC Advances. 6 (101): pp. 99211-99219.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/51109
dc.identifier.doi10.1039/c6ra23286h
dc.description.abstract

© 2016 The Royal Society of Chemistry.Formation of an intimate electrode/electrolyte interface is essential for solid oxide fuel cells (SOFCs). In this study, a comparative investigation has been undertaken to study the interface formation between a La0.8Sr0.2MnO3 (LSM) cathode and Y2O3-ZrO2 (YSZ) electrolyte by high temperature sintering and by cathodic polarization using EIS, SEM, AFM and HAADF-STEM techniques. The electrode/electrolyte interface formed by the conventional pre-sintering process is characterized by the formation of distinctive convex contact rings on the YSZ surface and such convex contact rings are due to the cation interdiffusion such as manganese species between LSM and YSZ. Similar to the thermally induced interface, the electrode/electrolyte interface can also be formed by electrochemical polarization for the in situ assembled LSM cathode on YSZ as well as on Gd2O3-CeO2 (GDC) electrolytes without pre-sintering at high temperatures. The polarization induced interface has smaller contact marks due to the much finer grain size of the as-prepared LSM electrodes. Detailed electrochemical impedance studies indicate that both thermally and polarization induced LSM/YSZ interfaces show comparable electrocatalytic activity and behaviour for the oxygen reduction reaction with similar activation energies. The present study clearly demonstrates the formation of effective electrode/electrolyte interfaces in SOFCs under the influence of cathodic polarization without high temperature sintering steps.

dc.publisherRoyal Society of Chemistry
dc.titleIn situ assembled La<inf>0.8</inf>Sr<inf>0.2</inf>MnO<inf>3</inf> cathodes on a Y<inf>2</inf>O<inf>3</inf>-ZrO<inf>2</inf> electrolyte of solid oxide fuel cells-interface and electrochemical activity
dc.typeJournal Article
dcterms.source.volume6
dcterms.source.number101
dcterms.source.startPage99211
dcterms.source.endPage99219
dcterms.source.titleRSC Advances
curtin.departmentFuels and Energy Technology Institute
curtin.accessStatusFulltext not available


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