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Interface formation and Mn segregation of directly assembled La0.8Sr0.2MnO3 cathode on Y2O3-ZrO2 and Gd2O3-CeO2 electrolytes of solid oxide fuel cells
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dc.contributor.author | He, Shuai | |
dc.contributor.author | Chen, Kongfa | |
dc.contributor.author | Saunders, Martin | |
dc.contributor.author | Quadir, Zakaria | |
dc.contributor.author | Tao, Shanwen | |
dc.contributor.author | Irvine, John T.S. | |
dc.contributor.author | Cui, C.Q. | |
dc.contributor.author | Jiang, San Ping | |
dc.date.accessioned | 2019-08-30T23:40:19Z | |
dc.date.available | 2019-08-30T23:40:19Z | |
dc.date.issued | 2018-11-01 | |
dc.identifier | 255716928 | |
dc.identifier | 4bd08b39-b706-4ed8-b3e3-8884d0b54939 | |
dc.identifier | 85052511784 | |
dc.identifier | 000449131900024 | |
dc.identifier.citation | He , 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 . https://doi.org/10.1016/j.ssi.2018.08.016 | en |
dc.identifier.issn | 0167-2738 | |
dc.identifier.other | RIS: urn:0E66ED20007BBA960A7F612A4919BEF2 | |
dc.identifier.other | ORCID: /0000-0002-8394-3359/work/68280797 | |
dc.identifier.uri | https://hdl.handle.net/10023/18398 | |
dc.description | This 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.abstract | The 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.format.extent | 13 | |
dc.format.extent | 3711034 | |
dc.language.iso | eng | |
dc.relation.ispartof | Solid State Ionics | en |
dc.subject | Solid oxide fuel cells | en |
dc.subject | Direct assembly | en |
dc.subject | LSM cathodes | en |
dc.subject | YSZ and GDC electrolyte | en |
dc.subject | Interface | en |
dc.subject | Mn segregation | en |
dc.subject | QD Chemistry | en |
dc.subject | NDAS | en |
dc.subject.lcc | QD | en |
dc.title | Interface formation and Mn segregation of directly assembled La0.8Sr0.2MnO3 cathode on Y2O3-ZrO2 and Gd2O3-CeO2 electrolytes of solid oxide fuel cells | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1016/j.ssi.2018.08.016 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2019-08-31 |
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