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dc.contributor.authorSu, C.
dc.contributor.authorXu, X.
dc.contributor.authorChen, Y.
dc.contributor.authorLiu., Y.
dc.contributor.authorTade, Moses
dc.contributor.authorShao, Zongping
dc.date.accessioned2017-01-30T14:12:06Z
dc.date.available2017-01-30T14:12:06Z
dc.date.created2015-07-16T06:21:58Z
dc.date.issued2015
dc.identifier.citationSu, C. and Xu, X. and Chen, Y. and Liu, Y. and Tade, M. and Shao, Z. 2015. A top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance. Journal of Power Sources. 274: pp. 1024-1033.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/38106
dc.identifier.doi10.1016/j.jpowsour.2014.10.177
dc.description.abstract

We develop a facile and effective top-down method for the fabrication of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) oxide with a high specific surface area (∼25 m2 g−1). The original BSCF is first synthesized by the simple EDTA–citric acid complexing method, and then treated in H2O2 to obtain the mesoporous BSCF. The structure and morphology of as-prepared BSCF power is systematically characterized by N2 adsorption/desorption isotherms, XRD, TEM, SEM and ICP techniques. A possible mechanism for the creation of mesoporous BSCF is proposed, in which Ba2+ and Sr2+ dissolve selectively from partial BSCF particles during the catalytic decomposition of H2O2. The electrochemical properties are investigated by the EIS and I–V test in the symmetrical cell and integrated single cell configurations, respectively. The interfacial reaction between BSCF electrode and YSZ electrolyte was suppressed successfully by using the BSCF with high specific surface area to decrease the sintering temperature (800 °C), thus the electrode exhibits high oxygen reduction reaction activity. The solid oxide fuel cell (SOFC) achieves an exciting peak power density of ∼1800 mW cm−2 at 800 °C, signifying the mesoporous BSCF, together with the preparation method, has a good application prospect in the development of SOFCs.

dc.publisherElsevier SA
dc.subjectSolid oxide fuel cell
dc.subjectHydrogen peroxide
dc.subjectPerovskite
dc.subjectMesopore
dc.subjectElectrochemical performance
dc.titleA top-down strategy for the synthesis of mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ as a cathode precursor for buffer layer-free deposition on stabilized zirconia electrolyte with a superior electrochemical performance
dc.typeJournal Article
dcterms.source.volume274
dcterms.source.startPage1024
dcterms.source.endPage1033
dcterms.source.issn0378-7753
dcterms.source.titleJournal of Power Sources
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


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