Electrolyte Cell
Mostrando 25-36 de 136 artigos, teses e dissertações.
-
25. Caracterização de vidros niobofosfatos para aplicação em selagem em célula a combústivel de óxido sólido / Characterization of niobophosphate glasses for solid oxide fuel cell (SOFC) sealing
Solid oxide fuel cells (SOFC) are devices which generate d.c. power by the oxidation of hydrogen molecules. These devices can have a multilayer plane design containing a cathode, an anode, a solid electrolyte, and a sealing material. The sealing, which is the subject of this study, has to be chemically stable at relatively SOFC operational condition in oxi-r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2010
-
26. Obtenção de cerâmicas de céria-samária-gadolínia para aplicação como eletrólito em células a combustível de óxido sólido (SOFC) / Obtaining of ceria - samaria - gadolinia ceramics for application as solid oxide fuel cell (SOFC) electrolyte
O óxido de cério (CeO2), quando dopado com óxidos de terras raras, tem sua condutividade iônica aumentada, possibilitando seu uso como eletrólito de Células a Combustível de Óxido Sólido de Temperatura Intermediária (IT-SOFC), que são operadas entre 500 e 700°C. Os aditivos ou dopantes mais eficientes para o aumento da condutividade iônica são
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2010
-
27. Análise estrutural de filmes finos de hematita produzidos por spin-coating para geração de hidrogênio / Structural analysis of hematite thin films produced by spin-coating for hidrogen generation
Water photolysis at semiconductors is a clean and renewable method for solar energy conversion into hydrogen fuel. Hematite (-Fe2O3) thin films have been presented as a promissory material for water photolysis due to its abundance, chemical stability, environmental compatibility and appropriate band gap energy to absorb a large part of the solar spec
Publicado em: 2010
-
28. Síntese e caracterizção eletroquímica de membranas híbridas Nafion-SIO2 para a aplicação como eletrólito polimérico em células a combustível tipo PEM / Synthesis and electrochemical characterization of hybrid membrane nafion-SiO2 for application as polymer electrolyte in PEM fuel cell
In this work, the effect of sol-gel synthesis parameters on the preparation and polarization response of Nafion-SiO2 hybrids as electrolytes for proton exchange membrane fuel cells (PEMFC) operating at high temperatures (130 oC) was evaluated. The inorganic phase was incorporated in a Nafion matrix with the following purposes: to improve the Nafion water upt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/11/2009
-
29. Estudo do desempenho e degradação de catalisadores e membranas em células a combustível de eletrólito polimérico / A performance and degradation study of catalysts and membranes for proton exchange fuel cell
In this work, the oxygen reduction reaction (ORR) was studied on nano-particulated Pt and PtM (M = Co, Cr, Fe e Ni) alloy electrocatalysts supported on carbon, prepared by an impregnation method, for utilization on polymer electrolyte fuel cell (PEFC). The physical properties of the materials have been investigated by energy dispersive X-ray analyses (EDX),
Publicado em: 2009
-
30. Deposition of carbon structures by electrochemical process through organic solution at room temperature / Deposição de estruturas carboniferas por processo eletroquimico atraves de solução organica em temperatura ambiente
This work describes the synthesis of carbon materials by the liquid phase electrodeposition technique performed at room temperature. During the process of deposition, was used an electrolytic cell with potential diference between the electrodes not exceeding 300V. The solution used was pure ethanol well as deionized water mixed with ethanol. The samples were
Publicado em: 2009
-
31. Montagem e caracterização elétrica de pilhas a combustível de óxido sólido (PaCOS)
This paper is focused on a review of the design features and the electrochemistry characterization of anode-supported planar SOFC. Studies and results of metallic alloy interconnectors and recovery for protection against corrosion and for contact layer are showed. Moreover a discussion of examples of measurements of impedance spectrometry, according to the l
Química Nova. Publicado em: 2009
-
32. Síntese e caracterização de NiO-CGO para anodo e eletrólitos sólidos e base de Céria para SOFC
The direct use of natural gas makes the Solid Oxide Fuel Cell (SOFC) potentially more competitive with the current energy conversions technologies. The Intermediate Temperature SOFC (IT-SOFC) offer several advantages over the High Temperature SOFC (HT-SOFC), which includes better thermal compatibility among components, fast start with lower energy consumptio
Publicado em: 2009
-
33. Aceleração da consolidação em solos tropicais com drenos condutores elétricos / Acceleration of consolidation on tropical soil with electro conductor drain
The electrokinetic method has been studied by a growing number of research centers, in application such as mining engineering, civil and environmental engineering, food and sports. To meet the application needs it was necessary to develop a new technology that combines a variety of materials, functions and processes for the implementation of specific activit
Publicado em: 2009
-
34. Electrochemical degradation of textile dye Remazol Orange 3R using different electrodes / Degradação eletroquímica do corante têxtil Alaranjado Remazol 3R utilizando diferentes eletrodos
This paper will present the results obtained for the electrochemical degradation of textile dye Remazol Orange 3R. A filter-press cell was used with different electrodes: platinum polycrystalline, DSA® Ti/Ru0,3Ti0,7O2 and an electrode prepared by the Pechini method (Ti/Pt). The electrode Ti/Pt was prepared by deposition H2PtCl6.6H2O on a Ti substrate and
Publicado em: 2009
-
35. Electroflotation of emulsified oil in industrial wastes evaluated with a full factorial design
The use of electroflotation in emulsified oil wastes was studied. A rectangular electroflotation cell was designed and constructed in acrylic with stainless steel cathode and DSA® anode with a nominal composition of Ti/Ru0.34Ti0.66O2. The variables studied in the present work were current density and oil, flocculant and electrolyte (NaCl) concentrations. Th
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
-
36. Estudo de conformação de cerâmicas à base de zircônia para aplicação em células a combustível do tipo óxido sólido / STUDY OF TAPE CASTING OF YTTRIA STABILIZED ZIRCONIA FOR APPLY IN SOLID OXIDE FUEL CELL
The hydrogen economy has been risen as new option for supply the growing global demand for energy. A fuel cell is an electrochemical device able to use hydrogen as a energy source. Carbon dioxide (CO2) emission is very low so it is ecologically friendly, once energy is produced by a reaction of hydrogen and oxygen. The production of energy from hydrogen fuel
Publicado em: 2008