Solid Oxide Fuel Cells
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. 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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2. Synthesis of the Perovskite-Type BaCe0.8Pr0.05Cu0.15O3-δ via EDTA-Citrate
BaCeO3-based ceramics are ionic and electronic conductors that can be applied to oxygen sensors, solid oxide fuel cells and oxygen permeable membranes. However, the low chemical stability at high temperatures of these materials motivates studies involving doping of A and/or B sites of the perovskite structure. In this context, the present work aimed to synth
Mat. Res.. Publicado em: 06/11/2017
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3. Optimization of spin-coated electrodes for electrolyte-supported solid oxide fuel cells
ABSTRACT Electrodes for electrolyte-supported solid oxide fuel cells (SOFC's) were fabricated by spin coating. Strontium-doped lanthanum manganite (LSM) cathode and nickel yttria-stabilized zirconia cermet anodes were synthesized and processed for enhanced deposition conditions. The influence of electrode microstructural parameters was investigated by a syst
Matéria (Rio J.). Publicado em: 22/05/2017
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4. Evaluation of nickel and copper catalysts in biogas reforming for hydrogen production in SOFC
ABSTRACT The solid oxide fuel cells (SOFC) enable the efficient generation of clean energy, fitting the current requirements of the growing demand for electricity and for the environment preservation. When powered with biogas (from digesters of municipal wastes), the SOFCs also contribute to reduce the environmental impact of these wastes. The most suitable
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. Microstructural and Electrical Features of Yttrium Stabilised Zirconia with ZnO as Sintering Additive
Adding ZnO reduces sintering temperature of yttria stabilized zirconia. Adding up to 0.5 wt% of ZnO is possible to densify to 8 mol% yttria stabilized zirconia (TZ8Y) to 95% of relative density at 1300 °C, besides, the electrical conductivity increases about 30% at 800 °C when compared to pure TZ8Y with the same relative density and average grain size. The
Mat. Res.. Publicado em: 16/02/2016
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7. Microwave Assisted Synthesis and Sintering of Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite
Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) perovskite-type oxide is currently one of the most promising materials for applications in solid-oxide fuel cells (SOFCs), protonic ceramic fuel cells (PCFCs), oxygen separation membranes, and catalytic membranes for methane conversion. BSCF powder synthesis has received considerable attention and new synthesis methods have b
Mat. Res.. Publicado em: 2015-02
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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. The effect of Pr co-doping on the densification and electrical properties of Sr-LaAlO3
Perovskite-type materials have been investigated extensively in the attempt to discover new electrolyte materials for solid oxide fuel cells (SOFC) operating at low temperatures. These materials include LaAlO3-based perovskite, which, when adequately doped, presents high ionic conductivity. However, despite the high conductivity of doped LaAlO3, two characte
Mat. Res.. Publicado em: 07/06/2013
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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. 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
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12. LaCrO3 composite coatings for AISI 444 stainless steel solid oxide fuel cell interconnects
Doped lanthanum chromite-based ceramics are the most widely used interconnector material in solid fuel cells (SOFC) since they exhibit significant electrical and thermal conductivity, substantial corrosion resistance and adequate mechanical strength at ambient and high temperatures. The disadvantage of this material is its high cost and poor ductility. The a
Mat. Res.. Publicado em: 23/10/2012