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dc.contributor.authorHe, Shuai
dc.contributor.authorChen, Kongfa
dc.contributor.authorSaunders, Martin
dc.contributor.authorQuadir, Zakaria
dc.contributor.authorTao, Shanwen
dc.contributor.authorIrvine, John T.S.
dc.contributor.authorCui, C.Q.
dc.contributor.authorJiang, San Ping
dc.identifier.citationHe , S , Chen , K , Saunders , M , Quadir , Z , Tao , S , Irvine , J T S , Cui , C Q & Jiang , S P 2018 , ' Interface formation and Mn segregation of directly assembled La 0.8 Sr 0.2 MnO 3 cathode on Y 2 O 3 -ZrO 2 and Gd 2 O 3 -CeO 2 electrolytes of solid oxide fuel cells ' , Solid State Ionics , vol. 325 , pp. 176-188 .
dc.identifier.otherPURE: 255716928
dc.identifier.otherPURE UUID: 4bd08b39-b706-4ed8-b3e3-8884d0b54939
dc.identifier.otherRIS: urn:0E66ED20007BBA960A7F612A4919BEF2
dc.identifier.otherScopus: 85052511784
dc.identifier.otherWOS: 000449131900024
dc.identifier.otherORCID: /0000-0002-8394-3359/work/68280797
dc.descriptionThis work was financially supported by the Australian Research Council under the Discovery Project Scheme (project numbers: DP180100731 and DP180100568), and by the Guangdong Provincial Department of Science and Technology Agency (GDST) under the GDST-NOW Science-Industry Cooperation Program (No. 2017A050501053).en
dc.description.abstractThe establishment of intimate electrode/electrolyte interface is very important in solid oxide fuel cells (SOFCs), because it plays a critical role in the overall cell performance and durability. In this study, Mn segregation and interface formation between directly assembled La0.8Sr0.2MnO3 (LSM) electrode and yttrium-stabilized zirconia (YSZ) or gadolinium-doped ceria (GDC) electrolytes are studied using combined focused ion beam and scanning transmission electron microscopy (FIB-STEM). In the case of LSM/YSZ and LSM/GDC electrodes, a significant reduction in the electrode ohmic resistance is observed after cathodic polarization at 900 °C and 500 mA cm−2, indicating the formation of an intimate interface. However, LSM particles start to disintegrate at the electrode/electrolyte interface with the increase of polarization time in the case of LSM/YSZ electrode. On the other hand, the LSM/GDC interface is very stable with negligible microstructure change at the interface. Mn segregation from the LSM perovskite structure is identified under the influence of polarization in both LSM/YSZ and LSM/GDC electrodes. The results demonstrate that nature of the electrolyte plays a critical role in the electrochemical activity, microstructure, morphology and stability of LSM/electrolyte interface under SOFC operation conditions.
dc.relation.ispartofSolid State Ionicsen
dc.rights© 2018 Published by Elsevier B.V. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at:
dc.subjectSolid oxide fuel cellsen
dc.subjectDirect assemblyen
dc.subjectLSM cathodesen
dc.subjectYSZ and GDC electrolyteen
dc.subjectMn segregationen
dc.subjectQD Chemistryen
dc.titleInterface formation and Mn segregation of directly assembled La0.8Sr0.2MnO3 cathode on Y2O3-ZrO2 and Gd2O3-CeO2 electrolytes of solid oxide fuel cellsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.description.statusPeer revieweden

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