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dc.contributor.authorChen, M.
dc.contributor.authorCheng, Y.
dc.contributor.authorHe, S.
dc.contributor.authorAi, N.
dc.contributor.authorVeder, Jean-Pierre
dc.contributor.authorRickard, William
dc.contributor.authorSaunders, M.
dc.contributor.authorChen, K.
dc.contributor.authorZhang, T.
dc.contributor.authorJiang, San Ping
dc.date.accessioned2018-08-08T04:42:00Z
dc.date.available2018-08-08T04:42:00Z
dc.date.created2018-08-08T03:50:52Z
dc.date.issued2018
dc.identifier.citationChen, M. and Cheng, Y. and He, S. and Ai, N. and Veder, J. and Rickard, W. and Saunders, M. et al. 2018. Active, durable bismuth oxide-manganite composite oxygen electrodes: Interface formation induced by cathodic polarization. Journal of Power Sources. 397: pp. 16-24.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/69722
dc.identifier.doi10.1016/j.jpowsour.2018.07.012
dc.description.abstract

Bismuth oxide is as an active promoter in enhancing the ionic conductivity and electrocatalytic activity of manganite oxygen electrodes of solid oxide cells, but there are very limited reports on the formation and evolution of electrode/electrolyte interface of bismuth oxide-manganite composite electrode under the influence of electrochemical polarization. Herein, we report the effect of electrochemical polarization and direction of polarization current on the electrocatalytic performance and electrode/electrolyte interface of a (La0·8Sr0.2)0.95Mn0·95Pt0·05O3+δ-Er0.4Bi1·6O3 (LSMPt-ESB) composite oxygen electrode assembled on zirconia electrolyte. The cell with the LSMPt-ESB electrode produces outstanding performance for power generation and steam splitting, and it is stable without noticeable degradation during operation at 600 °C for 350 h in the fuel cell mode. The cathodic polarization induces in operando formation of electrode/electrolyte interface with observation of an Er-deficient LSMPt-ESB dense layer and Er-rich (Er,Bi,Mn)Ox particles on the zirconia electrolyte surface. This is different to the case of dwell under open circuit and in particular under anodic polarization conditions. The present study gains insights into the development of high performance, reliable bismuth oxide-manganite composite oxygen electrode for reduced temperature solid oxide cells.

dc.publisherElsevier SA
dc.titleActive, durable bismuth oxide-manganite composite oxygen electrodes: Interface formation induced by cathodic polarization
dc.typeJournal Article
dcterms.source.volume397
dcterms.source.startPage16
dcterms.source.endPage24
dcterms.source.issn0378-7753
dcterms.source.titleJournal of Power Sources
curtin.departmentJohn de Laeter Centre
curtin.accessStatusFulltext not available


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