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dc.contributor.authorLiu, Y.
dc.contributor.authorGuo, Y.
dc.contributor.authorRan, R.
dc.contributor.authorShao, Zongping
dc.date.accessioned2017-01-30T12:11:09Z
dc.date.available2017-01-30T12:11:09Z
dc.date.created2014-10-08T01:14:47Z
dc.date.issued2013
dc.identifier.citationLiu, Y. and Guo, Y. and Ran, R. and Shao, Z. 2013. A novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid. Journal of Membrane Science. 437: pp. 189-195.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/18983
dc.description.abstract

BaZr0.4Ce0.4Y0.2O3-delta (BZCY4) has been widely considered to be a promising electrolyte material for H+ - SOFC, but it is restricted to commercial applications due to its poor densification behavior. A dense BZCY4 pellet was obtained by sintering at 1250 degree Celcius after impregnating the material with a zinc nitrate solution.The dilatometer curves and scanning electron microscopy (SEM) images indicated that the sinterability of the BZCY4 material is effectively improved by impregnating the green membrane with 4wt% Zn. Moreover, EDX mapping indicated that the Ba, Zr and Ce elements were homogeneously distributed in the BZCY4+4 wt%Zn sample sintered at 1250 degree Celcius . In addition, an integrated SOFC employing a BZCY4+4 wt% Zn electrolyte was successfully fabricated without any cracks and delamination by impregnating the BZCY4 electrolyte membrane with zinc nitrate as a sintering aid. This single cell with a 25mm thick BZCY4+4 wt% Zn electrolyte membrane exhibited power densities as high as 360 and 276 mWcm-2 at 700 and 600 degree Celcius , respectively. Electrical conductivity measurements demonstrated that the total conductivities of BZCY4+4 wt% Zn were 0.46*10-2 S cm-1, 0.56*10-2 S cm-1,0.20*10-2 S cm-1 and 0.40*10-2 S cm-1 at 600 degree Celcius in air, wet air,10% H2–Ar and wet 10% H2–Ar, respectively.

dc.publisherElsevier B.V
dc.subjectSintering aid
dc.subjectImpregnation
dc.subjectZinc nitrate
dc.subjectSolid oxide fuel cells
dc.subjectProton conductor
dc.titleA novel approach for substantially improving the sinterability of BaZr0.4Ce0.4Y0.2O3-delta electrolyte for fuel cells by impregnating the green membrane with zinc nitrate as a sintering aid
dc.typeJournal Article
dcterms.source.volume437
dcterms.source.startPage189
dcterms.source.endPage195
dcterms.source.issn0376-7388
dcterms.source.titleJournal of Membrane Science
curtin.accessStatusFulltext not available


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