Ysz
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. ANODES FOR SOFC: REVIEW OF MATERIAL SELECTION, INTERFACE AND ELECTROCHEMICAL PHENOMENA
This paper presents a comprehensive interface and electrochemical phenomena review of different anodes for SOFC. In this way, it was possible to select some mixed electronic and ionic conductor materials alternatives to the conventional anode, Ni-YSZ conductor. New materials must present a satisfactory electronic and ionic conductivity at intermediate temper
Quím. Nova. Publicado em: 2021-01
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2. Preparation and characterization of yttria stabilized zirconia (YSZ) films deposited by dip-coating on LSM-YSZ substrate with different proportions
ABSTRACT In this work, sol-gel/dip-coating process for obtaining yttria stabilized zirconia (YSZ, ZrO2–8% Y2O3) films deposited onto LSM-YSZ (lanthanum strontium manganite (LSM, La0.7Sr0.3MnO3) mixed with YSZ) with different proportions (20/80, 50/50, 80/20) was investigated. The films were deposited on substrate varying the number of layers deposited. LSM
Matéria (Rio J.). Publicado em: 25/11/2019
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3. Influence of Yttria-Stabilized Zirconia on Microstructure and Electrical Properties of Doped Lanthanum Gallate
Lanthanum gallate with partial substitutions for strontium and magnesium shows higher ionic conductivity than traditional ionic conductors such as yttria-stabilized zirconia (8YSZ), and has been considered for application as solid electrolyte and electrode in Solid Oxide Fuel Cells operating at intermediate temperatures (500-700ºC). Parallel to the developm
Mat. Res.. Publicado em: 01/08/2019
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4. Electrical and microstructural characterization of Gd-doped Ceria/Y-doped Zirconia bi-layer electrolyte prepared by tape casting
ABSTRACT GDC-YSZ bi-layer SOFC electrolytes are an interesting manner to protect GDC electrolytes of the low oxygen partial pressure present at anode-electrolyte interface. This oxygen partial pressure condition and high temperatures during the operation of SOFC permit GDC electrolyte reduction injuring the performance of SOFC. In this work, GDC-YSZ bi-layer
Matéria (Rio J.). Publicado em: 22/05/2017
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5. Effect of La 0.8 Sr 0.2 MnO 3 powder addition in the precursor solution on the properties of cathode films deposited by spray pyrolysis
ABSTRACT Films of lanthanum strontium manganite, LSM (La0.8Sr0.2MnO3) were deposited on yttria stabilized zirconia (YSZ) substrates by different methods aiming to establish the most suitable route to prepare cathodes for solid oxide fuel cells (SOFC). Samples were obtained by using a solution of lanthanum, strontium and manganese nitrates or a dispersion of
Matéria (Rio J.). Publicado em: 11/05/2017
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6. Synthesis and Characterization of Yttrium Stabilized Zirconia Nanoparticles
Yttria stabilized zirconia (YSZ) nanoparticles were synthesized by the co-precipitation method. The crystallinity, morphological and optical properties of the YSZ nanoparticles were studied by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), FT-Raman, photoluminescence (PL) spectrum analyses. The grai
Mat. Res.. Publicado em: 07/06/2016
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7. Estudio de la estructura y las propiedades mecánicas en un recubrimiento de circona estabilizada con 8% en mol de itria elaborado por proyección térmica por plasma a partir de suspensiones
The study of nanostructured coatings manufactured by thermal spraying has generated a great interest in the last two decades due to their considerable improved properties especially in the physical and mechanical properties. This improvement is to reduce grain sizes of their raw materials at scales of 100-1000 times lower compared to conventional coatings (m
Matéria (Rio J.). Publicado em: 2016-03
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8. Compatibility analyses of BICUVOX.10 as a cathode in yttria-stabilized zirconia electrolytes for usage in solid oxide fuel cells
Copper-substituted bismuth vanadate has been considered a promising material for composite cathodes in SOFC. However, high reactivity of BICUVOX.10 towards the electrolytes still has been its greatest shortcoming. This paper describes reactions between BICUVOX.10 and yttria-stabilized zirconia (YSZ) electrolytes. Secondary phases formed were evaluated by X-r
Mat. Res.. Publicado em: 30/09/2014
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9. A Influência dos parâmetros de deposição na morfologia dos eletrólitos para células a combustível de óxido sólido, à base de filmes de zircônia: 8 mol% ítria depositados por spray pirólise
Foram produzidos filmes de zircônia estabilizada com 8 mol% de itria (8YSZ) por spray pirólise, que podem ser aplicados como eletrólitos de células a combustível de óxido sólido. A técnica de spray pirólise tem como vantagens ser de simples manuseio, baixo custo de operação, versátil e eficiente na obtenção dos filmes cerâmicos. Entretanto, co
Cerâmica. Publicado em: 2013-09
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10. Yttria and ceria doped zirconia thin films grown by pulsed laser deposition
The Yttria stabilized Zirconia (YSZ) is a standard electrolyte for solid oxide fuel cells (SOFCs), which are potential candidates for next generation portable and mobile power sources. YSZ electrolyte thin films having a cubic single phase allow reducing the SOFC operating temperature without diminishing the electrochemical power density. Films of 8 mol% Ytt
Mat. Res.. Publicado em: 16/04/2013
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11. Uso da técnica de serigrafia para deposição de filmes de catodo de pilha a combustível de óxido sólido
A Ferrita Cobaltita de Lantâneo dopada com Estrôncio (LSCF) tem se monstrado como um material altamente promissor para ser usado como catodo de pilhas a combustível de óxido sólido devido a sua condutividade mista (iônica e eletrônica) e alta capacidade catalítica para a reação de redução do oxigênio. A técnica de serigrafia é muito utilizada
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2012
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12. Síntese, processamento e caracterização de cátodo para aplicação em células a combustível de óxido sólido de temperatura intermediária / Synthesis, processing and characterization of cathode for application in intermediate temperature solid oxide fuel cells
Os filmes micrométricos contendo óxido misto de lantânio, estrôncio, cobalto e ferro (La0,60Sr0,40)(Co0,20Fe0,80)O3-δ - LSCF, misturado com (Ce0,90Gd0,10)O1,95 - CGO, são relevantes para a utilização como camada funcional para o cátodo da Célula a Combustível de Óxido Sólido de Temperaturas Intermediárias. Estes filmes foram depositados no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012