000078971 001__ 78971
000078971 005__ 20190508155157.0
000078971 0247_ $$2doi$$a10.1021/acsaem.8b00115
000078971 0248_ $$2sideral$$a110741
000078971 037__ $$aART-2018-110741
000078971 041__ $$aeng
000078971 100__ $$aMorales, M.
000078971 245__ $$aInfluence of Anode Functional Layers on Electrochemical Performance and Mechanical Strength in Microtubular Solid Oxide Fuel Cells Fabricated by Gel-Casting
000078971 260__ $$c2018
000078971 5060_ $$aAccess copy available to the general public$$fUnrestricted
000078971 5203_ $$aAnode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as electrolyte were fabricated, varying the composition and number of anode functional layers (AFLs), by combining the aqueous gel-casting and spray-coating techniques. Suitable aqueous slurry formulation of NiO-SDC was prepared using agarose as a gelling agent for gel casting of tubular supports. Afterward, 40:60 and 50:50 NiO:SDC (wt %) as AFLs and SDC electrolyte were deposited by spray-coating and subsequently co-sintered. Finally, mT-SOFCs with 2.5 mm outer diameter and thicknesses of 380 pm support; 0, 12, and 24 mu m AFLs; 15 mu m electrolyte; and 30 mu m cathode were obtained. The influence of AFLs on the performance and mechanical integrity was investigated for the three cells. For this purpose, electrochemical and mechanical tests at both macroscopic and micro-/nanometric scales (at the AFLs region) were determined by flexural strength and nanoindentation techniques, respectively. The results evidence that the use of AFLs with an adequate composition and microstructure in the mT-SOFCs is required to improve the performance and mechanical strength of the cell. The cell with a single-layer AFL of 50:50 NiO:SDC (wt %) and 12 pm thickness exhibited the best performance (0.52 W.cm(-2)) at 650 degrees C using hydrogen as fuel and air as oxidant.
000078971 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2015-68078-R
000078971 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000078971 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000078971 700__ $$0(orcid)0000-0002-7819-8956$$aLaguna-Bercero, M.A.$$uUniversidad de Zaragoza
000078971 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000078971 773__ $$g1, 5 (2018), 2024-2031$$pACS app. energy mater.$$tACS applied energy materials$$x2574-0962
000078971 8564_ $$s532485$$uhttps://zaguan.unizar.es/record/78971/files/texto_completo.pdf$$yPostprint
000078971 8564_ $$s83743$$uhttps://zaguan.unizar.es/record/78971/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000078971 909CO $$ooai:zaguan.unizar.es:78971$$particulos$$pdriver
000078971 951__ $$a2019-05-08-14:42:43
000078971 980__ $$aARTICLE