000060979 001__ 60979
000060979 005__ 20190709135529.0
000060979 0247_ $$2doi$$a10.1039/c7ra01259d
000060979 0248_ $$2sideral$$a98553
000060979 037__ $$aART-2017-98553
000060979 041__ $$aeng
000060979 100__ $$aMorales, M.
000060979 245__ $$aMicrotubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties
000060979 260__ $$c2017
000060979 5060_ $$aAccess copy available to the general public$$fUnrestricted
000060979 5203_ $$aDifferent cell configurations of anode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as the electrolyte were fabricated. Several cells were processed varying the porosity and wall thickness (outer diameter) of NiO-SDC tubular supports. Suitable aqueous slurry formulations of NiO-SDC for gel-casting were prepared using agarose, as a gelling agent, and sucrose, as a pore former. The subsequent NiO-SDC anode functional layer (AFL), the SDC electrolyte and the La0.6Sr0.4Co0.2Fe0.8O3-d-SDC cathode were deposited by spray-coating. Afterwards, the electrochemical performance of different single cells was tested under humidified hydrogen as the fuel and air as the oxidant. The mechanical strength of the supporting tubes at different processing stages (green, pre-/post-sintering, post-reduction, post-redox cycle conditions) were also determined to study the macro-mechanical failure behaviour of the cells. In addition, the mechanical strength of half-cells with different porosity, sintering temperature and wall thickness in the tubular supports was also determined. For this purpose, the modulus of rupture was measured by a three point bending test. This study shows that the electrochemical properties and mechanical strength are feasible for further development of anode-supported mT-SOFCs fabricated by gel-casting.
000060979 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68078-R
000060979 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000060979 590__ $$a2.936$$b2017
000060979 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b71 / 171 = 0.415$$c2017$$dQ2$$eT2
000060979 592__ $$a0.863$$b2017
000060979 593__ $$aChemistry (miscellaneous)$$c2017$$dQ1
000060979 593__ $$aChemical Engineering (miscellaneous)$$c2017$$dQ1
000060979 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000060979 700__ $$0(orcid)0000-0002-7819-8956$$aLaguna-Bercero, M.A.$$uUniversidad de Zaragoza
000060979 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000060979 773__ $$g7, 29 (2017), 17620-17628$$pRSC ADVANCES$$tRSC Advances$$x2046-2069
000060979 8564_ $$s4159188$$uhttps://zaguan.unizar.es/record/60979/files/texto_completo.pdf$$yVersión publicada
000060979 8564_ $$s121107$$uhttps://zaguan.unizar.es/record/60979/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000060979 909CO $$ooai:zaguan.unizar.es:60979$$particulos$$pdriver
000060979 951__ $$a2019-07-09-12:01:18
000060979 980__ $$aARTICLE