Relevant bibliographies by topics / Solid oxide electrolyser

Academic literature on the topic 'Solid oxide electrolyser'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Solid oxide electrolyser"

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Yang, Liming, Kui Xie, Lan Wu, Qingqing Qin, Jun Zhang, Yong Zhang, Ting Xie, and Yucheng Wu. "A composite cathode based on scandium doped titanate with enhanced electrocatalytic activity towards direct carbon dioxide electrolysis." Phys. Chem. Chem. Phys. 16, no. 39 (2014): 21417–28. http://dx.doi.org/10.1039/c4cp02229g.

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Lehtinen, Timo, and Matti Noponen. "Solid Oxide Electrolyser Demonstrator Development at Elcogen." ECS Meeting Abstracts MA2021-03, no. 1 (July 23, 2021): 285. http://dx.doi.org/10.1149/ma2021-031285mtgabs.

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Lehtinen, Timo, and Matti Noponen. "Solid Oxide Electrolyser Demonstrator Development at Elcogen." ECS Transactions 103, no. 1 (July 9, 2021): 1939–44. http://dx.doi.org/10.1149/10301.1939ecst.

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Borm, Oliver, and Stephen B. Harrison. "Reliable off-grid power supply utilizing green hydrogen." Clean Energy 5, no. 3 (August 1, 2021): 441–46. http://dx.doi.org/10.1093/ce/zkab025.

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Abstract Green hydrogen produced from wind, solar or hydro power is a suitable electricity storage medium. Hydrogen is typically employed as mid- to long-term energy storage, whereas batteries cover short-term energy storage. Green hydrogen can be produced by any available electrolyser technology [alkaline electrolysis cell (AEC), polymer electrolyte membrane (PEM), anion exchange membrane (AEM), solid oxide electrolysis cell (SOEC)] if the electrolysis is fed by renewable electricity. If the electrolysis operates under elevated pressure, the simplest way to store the gaseous hydrogen is to feed it directly into an ordinary pressure vessel without any external compression. The most efficient way to generate electricity from hydrogen is by utilizing a fuel cell. PEM fuel cells seem to be the most favourable way to do so. To increase the capacity factor of fuel cells and electrolysers, both functionalities can be integrated into one device by using the same stack. Within this article, different reversible technologies as well as their advantages and readiness levels are presented, and their potential limitations are also discussed.
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Menon, V., V. M. Janardhanan, and O. Deutschmann. "Modeling of Solid-Oxide Electrolyser Cells: From H2, CO Electrolysis to Co-Electrolysis." ECS Transactions 57, no. 1 (October 6, 2013): 3207–16. http://dx.doi.org/10.1149/05701.3207ecst.

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Motylinski, Konrad, Michał Wierzbicki, Stanisław Jagielski, and Jakub Kupecki. "Investigation of off-design characteristics of solid oxide electrolyser (SOE) operated in endothermic conditions." E3S Web of Conferences 137 (2019): 01029. http://dx.doi.org/10.1051/e3sconf/201913701029.

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One of the key issues in the energy production sector worldwide is the efficient way to storage energy. Currently- more and more attention is focused on Power-to-Gas (P2G) installations- where excess electric power from the grid or various renewable energy sources is used to produce different kind of fuels- such as hydrogen. In such cases- generated fuels are treated as energy carriers which- in contrast to electricity- can be easy stored and transported. Currently- high temperature electrolysers- based solid oxide cells (SOC)- are treated as an interesting alternative for P2G systems. Solid oxide electrolysers (SOE) are characterized as highly efficient (~90%) and long-term stable technologies- which can be coupled with stationary power plants. In the current work- the solid oxide cell stack was operated in electrolysis mode in the endothermic conditions. Based on the gathered experimental data- the numerical model of the SOC stack was created and validated. The prepared and calibrated model was used for generation of stack performance maps for different operating conditions. The results allowed to determine optimal working conditions for the tested stack in the electrolysis mode- thus reducing potential costs of expensive experimental analysis and test campaigns.
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Schiller, Günter, Asif Ansar, and Olaf Patz. "High Temperature Water Electrolysis Using Metal Supported Solid Oxide Electrolyser Cells (SOEC)." Advances in Science and Technology 72 (October 2010): 135–43. http://dx.doi.org/10.4028/www.scientific.net/ast.72.135.

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Metal supported cells as developed at DLR for use as solid oxide fuel cells by applying plasma deposition technologies were investigated in operation of high temperature steam electrolysis. The cells consisted of a porous ferritic steel support, a diffusion barrier layer, a Ni/YSZ fuel electrode, a YSZ electrolyte and a LSCF oxygen electrode. During fuel cell and electrolysis operation the cells were electrochemically characterised by means of i-V characteristics and electrochemical impedance spectroscopy measurements including a long-term test over 2000 hours. The results of electrochemical performance and long-term durability tests of both single cells and single repeating units (cell including metallic interconnect) are reported. During electrolysis operation at an operating temperature of 850 °C a cell voltage of 1.28 V was achieved at a current density of -1.0 A cm-2; at 800 °C the cell voltage was 1.40 V at the same operating conditions. The impedance spectra revealed a significantly enhanced polarisation resistance during electrolysis operation compared to fuel cell operation which was mainly attributed to the hydrogen electrode. During a long-term test run of a single cell over 2000 hours a degradation rate of 3.2% per 1000 hours was observed for operation with steam content of 43% at 800 °C and a current density of -0.3 Acm-2. Testing of a single repeating unit proved that a good contacting of cell and metallic interconnect is of major importance to achieve good performance. A test run over nearly 1000 hours showed a remarkably low degradation rate.
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Schiller, G., A. Ansar, M. Lang, and O. Patz. "High temperature water electrolysis using metal supported solid oxide electrolyser cells (SOEC)." Journal of Applied Electrochemistry 39, no. 2 (October 7, 2008): 293–301. http://dx.doi.org/10.1007/s10800-008-9672-6.

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Qin, Qingqing, Kui Xie, Haoshan Wei, Wentao Qi, Jiewu Cui, and Yucheng Wu. "Demonstration of efficient electrochemical biogas reforming in a solid oxide electrolyser with titanate cathode." RSC Adv. 4, no. 72 (2014): 38474–83. http://dx.doi.org/10.1039/c4ra05587j.

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Jang, Inyoung, and Geoff H. Kelsall. "Effects of Electronic and Ionic Conductivities of Layered Perovskites on Solid Oxide Electrolyser Performances." ECS Meeting Abstracts MA2022-02, no. 49 (October 9, 2022): 1955. http://dx.doi.org/10.1149/ma2022-02491955mtgabs.

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The climate change crisis is causing an exponentially increase in demand for green hydrogen. When run in electrolysis mode, solid oxide electrochemical reactors (SOERs) are one of the systems that can generate green hydrogen with high efficiencies, due to their high operating temperatures. In SOERs, the rate-determining steps for the overall reaction come from oxygen reduction (ORR) in fuel cell mode and oxygen evolution (OER) in electrolyser mode. For the enhancement of catalytic activity for ORR/OER, recent studies have been focused on layer perovskite materials for positive electrodes to increase SOER performances. The distinctive arrangement of cations in their structures leads to higher oxygen vacancy concentrations, thereby promoting catalytic activity for ORR/OER. We shall report OER kinetics of two layered perovskites: PrBaCo1.6Fe0.4O5+δ (PBCF) and NdBaCo1.6Fe0.4O5+δ (NBCF) which have been studied as materials exhibiting major differences in oxide ion and electronic conductivities. Electrolyser performances were determined of both water vapour (→2H2 + O2) and CO2 (→2CO + O2), on which the effects were investigated of those differences in ionic / electronic conductivities. For water vapour electrolysis at the thermoneutral potential difference of 1.285 V, the current density was 144 mA cm-2 at 700 ℃ for the cell with a PBCF positive electrode, which exhibited current densities 1.42 times higher than for the cell with a NBCF positive electrode, for reasons we shall explain.
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Dissertations / Theses on the topic "Solid oxide electrolyser"

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Tao, Gege. "Investigation of carbon dioxide electrolysis reaction kinetics in a solid oxide electrolyzer." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/289913.

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The atmosphere of Mars is a potential source of the gases essential for human exploration missions. Many international space agencies and scientists have shown great interest in developing chemical plants to make propellants and life-support consumables utilizing the red planet's atmosphere and Earth-sourced H₂. Electrolyzing carbon dioxide to produce oxygen by a solid oxide electrolysis cell has been proven to be a potential candidate. A solid oxide electrolysis cell, which consists of 8mol% yttria-stabilized zirconia sandwiched between two electrodes, is designed, manufactured and tested. The electrode/electrolyte interfacial polarization characteristics are investigated with the aid of the current interruption method using a four-electrode set-up. Activation overpotentials, which are free of ohmic losses, are measured in the temperature range from 1023 to 1123K for the carbon dioxide electrode and the oxygen electrode. Both the electrode activation overpotentials show the Tafel behavior. In order to increase the active electrochemical reaction sites, platinum yttria-stabilized zirconia cermet electrode is investigated. A solid oxide electrolysis cell with cermet electrodes shows high performance and significantly reduces anode activation overpotentials, and ohmic resistance as well. A 1-D steady state solid oxide electrolysis cell model is set up to take into account different kinetics: (1) surface exchange kinetics at the gas/electrode interface involving adsorption/desorption; (2) mass transfer of the reactants and products involving the bulk diffusion and surface diffusion; and (3) electrochemical kinetics involving charge transfer at the triple phase boundary. The solid oxide electrolysis cell's performance and voltage are predicted at any given current based on this model. The effects of surface diffusion coefficients, adsorption/desorption rate constants, and anodic/cathodic reaction rate constants on carbon dioxide electrolysis are studied. A comparison of solid oxide electrolysis cells between the numerical results and the experimental results is made.
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SANTANA, LEONARDO de P. "Estudo de conformacao de ceramicas a base de zirconia para aplicacao em celulas a combustivel do tipo oxido solido." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11727.

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Dissertação (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Anelli, Simone. "Advanced strategies for Solid Oxide Electrolysis cells." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/671683.

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Actualment, la transició energètica cap a un escenari baix en carboni està impulsant la instal·lació global de fonts d’energia renovables, el seu desplegament per sobre de l’40%, implicarà l’ús de sistemes eficients d’emmagatzematge d’energia per cobrir la demanda. Les rutes d’hidrogen verd i power to gas es presenten com la millor alternativa per a aquest emmagatzematge al connectar les xarxes elèctriques i de gas. En aquest marc, les cel·les d’electròlisi d’òxid sòlid (SOEC), que produeixen hidrogen i gas de síntesi (H2 + CO) a partir de l’electròlisi de l’aigua o la co-electròlisi de l’aigua i el diòxid de carboni, són els electrolitzadors més eficients per a l’emmagatzematge d’energia. Les SOEC posseeixen altes taxes de conversió d’energia (≈80%) atorgades pel rang de temperatura d’operació (600-900 °C). No obstant, un dels principals inconvenients de les SOEC està relacionat amb les tècniques de fabricació, que impliquen molts passos per produir dispositius complets. A més, les seves prestacions i durabilitat encara s’estan investigant per augmentar la maduresa de la tecnologia i penetrar en el mercat competint amb altres tecnologies d’electròlisi que mostren menors eficiències. La present tesi està dedicada a l’exploració de nous conceptes de SOEC. Per a això, es consideren tres aspectes, que són: i) utilització de tècniques de fabricació additiva per a la fabricació replicable, automàtica i customitzable de dispositius energètics; ii) síntesi de nanocompostos mesoporosos en l’elèctrode d’oxigen per millorar el rendiment general i la durabilitat del dispositiu SOEC; i finalment iii) la producció de gas de síntesi per co-electròlisi i oxidació parcial de metà (POM) amb els dispositius desenvolupats. Robocasting (RC) i InkJet printing (IJP) s’han utilitzat per a la fabricació de cel·les simètriques impreses per tecnologia híbrides d’impressió 3D, que van ser co-sinteritzades a altes temperatures i provades electroquímicament. S’ha demostrat la viabilitat d’aquestes dues tècniques combinades per a la fabricació de dispositius ceràmics. S’ha sintetitzat ceria dopada mesoporosa (CGO) utilitzada com a suport per a elèctrodes d’oxigen nanocompostos. Per a això es proposa una ruta optimitzada per millorar l’activitat catalítica dels elèctrodes de base mesoporosa i per reduir la temperatura de sinterització mantenint la seva nanoestructura, i l’estudi dels seus efectes sobre el material. La millora del rendiment dels dispositius SOEC aplicant les rutes de síntesi i fabricació desenvolupades es demostra pels excel·lents resultats aconseguits, sense precedents per a aquest tipus de SOEC. El rendiment de dispositius complets amb elèctrodes d’oxigen mesoporosos es va provar a altes temperatures. El suport nanoestructurat optimitzat ha estat provat en una cel·la de botó (diàmetre = 2 cm) mostrant excel·lents rendiments observats en condicions de co-electròlisi i pila de combustible. També es va dipositar CGO mesoporós en cel·les d’àrea gran (25 cm2) per demostrar l’escalabilitat del material, per a dispositius d’interès comercial. Com a resum, el document presentat tracta de l’optimització de dispositius electroquímics innovadors d’alta eficiència com les SOEC, donant un nou pas més enllà de l’estat de l’art en les tecnologies de producció d’hidrogen a causa de la combinació de rutes de fabricació innovadores com la fabricació additiva de materials ceràmics amb funcionalitats avançades com els mesoporosos.
Actualmente, la transición energética hacia un escenario bajo en carbono está impulsando la instalación global de fuentes de energía renovables, su despliegue por encima del 40%, implicará el uso de sistemas eficientes de almacenamiento de energía. Las rutas de hidrógeno verde y power to gas se presentan como la mejor alternativa para este almacenamiento. En este marco, las celdas de electrólisis de óxido sólido (SOEC), que producen hidrógeno y gas de síntesis (H2 + CO) a partir de la electrólisis del agua o la co-electrólisis del agua y el dióxido de carbono, son los electrolizadores más eficientes. Las SOEC poseen altas tasas de conversión de energía (≈80%) otorgadas por el rango de temperatura de operación (600-900 ° C). Sin embargo, uno de los principales inconvenientes de las SOEC está relacionado con las técnicas de fabricación, que implican muchos pasos para producir dispositivos completos. Además, sus prestaciones y durabilidad aún se están investigando para aumentar la madurez de la tecnología y penetrar en el mercado compitiendo con otras tecnologías de electrólisis que muestran menores eficiencias. La presente tesis está dedicada a la exploración de nuevos conceptos de SOEC. Para ello, se consideran tres aspectos, que son: i) utilización de técnicas de fabricación aditiva para la fabricación replicable, automática y sintonizable de dispositivos energéticos; ii) síntesis de nanocompuestos mesoporosos en el electrodo de oxígeno para mejorar el rendimiento general y la durabilidad del dispositivo SOEC; y finalmente iii) la producción de gas de síntesis por co-electrólisis y oxidación parcial de metano (POM) con los dispositivos desarrollados. Robocasting e Inkjet Printing se utilizaron para la fabricación de celdas simétricas impresas por tecnología híbridas de impresión 3D, co-sinterizadas a altas temperaturas y probadas electroquímicamente. Se ha demostrado la viabilidad de estas dos técnicas para la fabricación de dispositivos cerámicos. Se ha sintetizado ceria dopada mesoporosa (CGO) utilizada como soporte para electrodos de oxígeno nanocompuestos. Para ello se propone una ruta optimizada para mejorar la actividad catalítica de los electrodos de base mesoporosa y para reducir la temperatura de sinterización manteniendo su nanoestructura. La mejora del rendimiento de los dispositivos SOEC aplicando las rutas de síntesis y fabricación desarrolladas se demuestra por los excelentes resultados conseguidos, sin precedentes para este tipo de SOEC. El rendimiento de dispositivos completos con electrodos de oxígeno mesoporosos se probó a altas temperaturas. El soporte nanoestructurado optimizado ha sido probado en una celda botón (diámetro = 2 cm) mostrando excelentes rendimientos observados en condiciones de COSOEC y SOFC. También se depositó CGO mesoporoso en celdas de área grande (25 cm2) para demostrar la escalabilidad del material. Ambos dispositivos se sometieron a una prueba de durabilidad, que mostró tasas de degradación en línea con la literatura más avanzada. Finalmente, se muestra la prueba de conceptos sobre la oxidación parcial de metano (POM) asistida electroquímicamente. Se produjo y probó un SOEC con CGO infiltrado por catalizadores de Ni y Cu como dispositivo POM. Se usó metano en el electrodo Ni-Cu-CGO como combustible. El oxígeno producido por la reacción de electrólisis del agua en el electrodo Ni-YSZ se utilizó para producir gas de síntesis a partir de CH4 en un proceso catalítico asistido electroquímicamente. Los principios de funcionamiento del experimento se demostraron con éxito. Como resumen, el presente documento trata de la optimización de dispositivos electroquímicos innovadores de alta eficiencia como las SOEC, dando un nuevo paso más allá del estado del arte en las tecnologías de producción de hidrógeno debido a la combinación de rutas de fabricación innovadores, como la fabricación aditiva con materiales cerámicos de funcionalidades avanzadas como los mesoporosos.
Nowadays, the energy transition to a low carbon scenario is promoting the global installation of renewable energy sources, its deployment above 40% will need the use of efficient energy storage systems for covering the demand. Green hydrogen and power to gas routes has arisen as the best alternative for this storage while connecting the electric and gas grids. In this frame, Solid Oxide Electrolysis Cells (SOECs), which produce hydrogen and syngas (H2+CO) from the electrolysis of water or the co-electrolysis of water and carbon dioxide, are the most efficient electrolysers for energy storage. SOECs possess high energy conversion rates (≈80 %) granted by the operation temperature range (600-900 °C). However, one of SOECs’ main drawbacks is related to the manufacturing techniques, which involves many steps to produce complete devices. Furthermore, their performances and durability are still being investigated to increase the maturity of the technology and penetrate to the market competing with other electrolysis technologies that show lower efficiencies. The present thesis is dedicated to the exploration of new concepts of SOECs. For this, three aspects are considered, which are: i) utilization of additive manufacturing (AM) techniques for reliable, automatic and tuneable fabrication of energy devices; ii) synthesis of mesoporous nanocomposites at the oxygen electrode to improve the general performances and durability of SOEC device; an finally iii) the production of syngas by co-electrolysis and partial oxidation of methane (POM) with the developed devices. Robocasting (RC) and Inkjet Printing (IJP) were used for the fabrication of hybrid 3D printed symmetrical cells, which were co-sintered at high temperatures and electrochemically tested. The feasibility of these two combined techniques for the fabrication of ceramic devices was demonstrated. Mesoporous doped ceria (CGO) was synthesized and used as a scaffold for nanocomposite oxygen electrodes. An optimized route to improve the catalytic activity of the mesoporous based electrodes and to reduce the sintering temperature to maintain their nanostructure, is proposed after the study of their effects on the material. The improvement of the SOEC devices performance applying the developed synthesis and fabrication routes is demonstrated by the achievement of unprecedented results for this type of SOEC. The performance of complete devices with mesoporous oxygen electrodes was tested at high temperatures. The optimized scaffold tested on a button test cell (diameter =2 cm) promoted the commented outstanding performances in both co-electrolysis and fuel cell conditions. Mesoporous CGO was also deposited on large area cells (25 cm2) to demonstrate the scalability of the material, for devices of commercial interest. Both devices underwent a durability test, showing degradation rates in line with state-of-the-art literature. Finally, the proof of concepts about electrochemically assisted partial oxidation of methane (POM) is shown. A SOEC with CGO scaffold infiltrated by Ni and Cu catalysers was produced and tested as POM device. Methane was supplied at the Ni-Cu-CGO electrode as fuel. The oxygen produced by the water electrolysis reaction at the Ni-YSZ electrode was used to produce syngas from CH4 on an electrochemical assisted catalytic process. The working principles of the experiment were successfully demonstrated opening a new research line. As a summary the present document deals with the optimization of innovative high efficient electrochemical devices as SOEC, bringing a new step beyond the state of the art on the hydrogen production technologies due to the combination of innovative fabrication routes such as the additive manufacturing with advanced functional ceramic materials like mesoporous.
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Hauch, Anne. "Solid oxide electrolysis cells : performance and durability /." Risø National Laboratory, 2007. http://www.risoe.dk/rispubl/reports/ris-phd-37.pdf.

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Iacomini, Christine Schroeder. "Combined carbon dioxide/water solid oxide electrolysis." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290073.

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Solid oxide electrolysis of a mixture of water and carbon dioxide has many applications in space exploration. It can be implemented in propellant production systems that use Martian resources or in closed-loop life support systems to cleanse the atmosphere of facilities in extraterrestrial bases and of cabin spacecrafts. This work endeavors to quantify the performance of combined water and carbon dioxide electrolysis, referred to as "combined electrolysis", and to understand how it works so that the technology can be best applied. First, to thoroughly motivate the research, system modeling is presented that demonstrates the competitiveness of the technology in terms of electrolysis power requirements and consequential system mass savings. Second, to demonstrate and quantify the performance of the technology, experimental results are presented. Electrolysis cells were constructed with 8% by mol yttria-stabilized zirconia electrolytes, 50/50 by weight platinum/yttria-stabilized zirconia electrodes and chromium-alloy or alumina manifolds and tubing. Performance and gas chromatograph data from electrolysis of many different gas mixtures, including water, carbon dioxide, and a combined mixture of both, are presented. Third, to explain observations made during experiments and theorize about the phenomena governing combined electrolysis, data analyses and thermodynamic modeling are applied. Conclusions are presented regarding the transient response of combined electrolysis, the relative performance of it to that of other mixtures, how its performance depends on the water to carbon dioxide ratio, its effect on cell health, and its preference to water versus carbon dioxide. Procedures are also derived for predicting the composition of combined electrolysis exhaust for a given oxygen production rate, humidity content, and inlet flow rate. The influence of the two cell materials proves to be significant. However, in both cases it is proven that combined electrolysis does not encourage carbon deposition and the makeup of its products is governed by the water gas shift reaction. It is shown that the chromium-alloy system achieves water gas shift reaction equilibrium whereas the alumina system does not. Experimental observations support the argument that chromium oxide inside the chromium alloy cell forces its water gas shift reaction to equilibrium during electrolysis, influencing combined electrolysis performance.
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Grieshammer, Steffen Paul [Verfasser], Manfred [Akademischer Betreuer] Martin, and Michael [Akademischer Betreuer] Schroeder. "Atomistic and macroscopic simulation of solid oxide electrolytes and electrolyzer cells / Steffen Paul Grieshammer ; Manfred Martin, Michael Schroeder." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1128731126/34.

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Grieshammer, Steffen [Verfasser], Manfred [Akademischer Betreuer] Martin, and Michael [Akademischer Betreuer] Schroeder. "Atomistic and macroscopic simulation of solid oxide electrolytes and electrolyzer cells / Steffen Paul Grieshammer ; Manfred Martin, Michael Schroeder." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://nbn-resolving.de/urn:nbn:de:hbz:82-rwth-2015-040481.

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Fawcett, Lydia. "Electrochemical performance and compatibility of La2NiO4+δ electrode material with La0.8Sr0.2Ga0.8Mg0.2O3-δ electrolyte for solid oxide electrolysis." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24667.

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La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) is an oxygen ion conducting electrolyte material widely used in solid oxide fuel cells (SOFC). La2NiO4+δ (LNO) is a mixed ionic-electronic conducting layered perovskite with K2NiF4 type structure which conducts oxygen ions via oxygen interstitials. LNO has shown promising results as an SOFC electrode in the literature. In this work the compatibility and performance of LNO electrodes on the LSGM electrolyte material for solid oxide electrolysis cell (SOEC) is investigated. The materials were characterised as SOEC/SOFC cells by symmetrical and three electrode electrochemical measurements using Electrochemical Impedance Spectroscopy (EIS). Conductivity and ASR values were obtained in the temperature range 300-800°C with varying atmospheres of pH2O and pO2. The cells were also subjected to varied potential bias, mimicking fuel cell or electrolysis use. Enhancement of LNO performance was observed with the application of potential bias in both anodic and cathodic mode of operation in all atmospheres with the exception of cathodic bias in pO2 = 6.5x10-3 atm. In ambient air at 800°C LNO ASRs were 2.82Ω.cm2, 1.83Ω.cm2 and 1.37Ω.cm2 in OCV, +1000mV bias and -1000mV bias respectively. In low pO2 at 800°C LNO ASRs were 9.17Ω.cm2, 1.74Ω.cm2 and 456.9Ω.cm2 in OCV, +1000mV bias and -1000mV bias respectively. The increase in ASR with negative potential bias in low pO2 is believed to be caused by an increase in mass transport and charge transfer impedance responses. Material stability was confirmed using X-Ray Diffraction (XRD), in-situ high temperature pH2O and pO2 XRD. In-situ XRD displayed single phase materials with no observable reactivity in the conditions tested. Scanning Electron Microscopy images of cells tested by EIS in all atmospheres displayed no microstructure degradation except for those cells tested in a humid atmosphere which display a regular pattern of degradation on the LNO surface attributed to reaction with the Pt mesh current collector.
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Nelson, George Joseph. "Solid Oxide Cell Constriction Resistance Effects." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10563.

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Solid oxide cells are best known in the energy sector as novel power generation devices through solid oxide fuel cells (SOFCs), which enable the direct conversion of chemical energy to electrical energy and result in high efficiency power generation. However, solid oxide electrolysis cells (SOECs) are receiving increased attention as a hydrogen production technology through high temperature electrolysis applications. The development of higher fidelity methods for modeling transport phenomena within solid oxide cells is necessary for the advancement of these key technologies. The proposed thesis analyzes the increased transport path lengths caused by constriction resistance effects in prevalent solid oxide cell designs. Such effects are so named because they arise from reductions in active transport area. Constriction resistance effects of SOFC geometry on continuum level mass and electronic transport through SOFC anodes are simulated. These effects are explored via analytic solutions of the Laplace equation with model verification achieved by computational methods such as finite element analysis (FEA). Parametric studies of cell geometry and fuel stream composition are performed based upon the models developed. These studies reveal a competition of losses present between mass and electronic transport losses and demonstrate the benefits of smaller SOFC unit cell geometry. Furthermore, the models developed for SOFC transport phenomena are applied toward the analysis of SOECs. The resulting parametric studies demonstrate that geometric configurations that demonstrate enhanced performance within SOFC operation also demonstrate enhanced performance within SOEC operation. Secondarily, the electrochemical degradation of SOFCs is explored with respect to delamination cracking phenomena about and within the critical electrolyte-anode interface. For thin electrolytes, constriction resistance effects may lead to the loss of electro-active area at both anode-electrolyte and cathode-electrolyte interfaces. This effect (referred to as masking) results in regions of unutilized electrolyte cross-sectional area, which can be a critical performance hindrance. Again analytic and computational means are employed in analyzing such degradation issues.
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Shin, J. Felix. "New electrolyte materials for solid oxide fuel cells." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/7607/.

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Two general systems, brownmillerite-type Ba₂In₂O₅ and apatite-type silicates have been investigated for potential solid oxide fuel cell electrolyte applications. The combination of powder diffraction, NMR, TGA, Raman and AC impedance spectroscopy indicated the successful incorporation of phosphate, sulphate and silicate into the Ba₂In₂O₅ structure leading to a transition from an ordered brownmillerite-type structure to a disordered perovskite-type, which led to the conductivity enhancement below 800 °C, along with a significant protonic contribution in wet atmospheres. The CO₂ stability was also shown to be improved on doping. This oxyanion doping strategy has been extended to the analogous system, Ba₂Sc₂O₅, which resulted in samples with high conductivity and good stability towards CO₂. Neutron diffraction studies on La₉.₆Si₆O₂₆.₄ indicated that the interstitial oxide ion is located near the channel centre. Further interstitial anions could be accommodated through hydration, which led to displacement of the interstitial site away from the channel centre, with an accompanying swelling of the channel. Although long term annealing of these apatite silicates showed no apparent significant structural change, a reduction in the bulk conductivity was observed, while the grain boundary conductivity was improved, thus resulting in a small enhancement in the total conductivity below 400 °C.
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Books on the topic "Solid oxide electrolyser"

1

International Symposium on Solid Oxide Fuel Cells (10th 2007 Nara, Japan). Solid oxide fuel cells 10: (SOFC-X). Edited by Eguchi K and Electrochemical Society. Pennington, N.J: Electrochemical Society, 2007.

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International Symposium on Solid Oxide Fuel Cells (6th 1999 Honolulu, Hawaii). Solid oxide fuel cells: (SOFC VI) : proceedings of the Sixth International Symposium. Edited by Singhal Subhash C, Dokiya M, Electrochemical Society. High Temperature Materials Division., Electrochemical Society Battery Division, and SOFC Society of Japan. Pennington, NJ: Electrochemical Society, 1999.

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Gross, Oliver John. Fabrication and structural characterization of a tape cast bismuth oxide-based solid electrolyte. Ottawa: National Library of Canada, 1993.

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Peters, Christoph. Grain-size effects in nanoscaled electrolyte and cathode thin films for solid oxide fuel cells (SOFC). Karlsruhe: Univ.-Verl. Karlsruhe, 2008.

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Zhu, Bin, Liangdong Fan, Rizwan Raza, and Chunwen Sun. Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices. Wiley & Sons, Incorporated, John, 2020.

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Zhu, Bin, Liangdong Fan, Rizwan Raza, and Chunwen Sun. Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices. Wiley & Sons, Incorporated, John, 2020.

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Zhu, Bin, Liangdong Fan, Rizwan Raza, and Chunwen Sun. Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices. Wiley & Sons, Incorporated, John, 2020.

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Zhu, Bin, Liangdong Fan, Rizwan Raza, and Chunwen Sun. Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices. Wiley & Sons, Limited, John, 2020.

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Solid Oxide Fuel Cells VI. Electrochemical Society, 1999.

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Kaur, Gurbinder. Intermediate Temperature Solid Oxide Fuel Cells: Electrolytes, Electrodes and Interconnects. Elsevier, 2019.

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Book chapters on the topic "Solid oxide electrolyser"

1

Shi, Yixiang, Ningsheng Cai, Tianyu Cao, and Jiujun Zhang. "Solid Oxide Electrolysis Cells." In High-Temperature Electrochemical Energy Conversion and Storage, 41–108. Boca Raton : CRC Press, Taylor & Francis Group, 2018. | Series: Electrochemical energy store & conversion: CRC Press, 2017. http://dx.doi.org/10.1201/b22506-3.

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Gómez, S. Y., and D. Hotza. "Chapter 5. Solid Oxide Electrolysers." In Electrochemical Methods for Hydrogen Production, 136–79. Cambridge: Royal Society of Chemistry, 2019. http://dx.doi.org/10.1039/9781788016049-00136.

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Ishihara, Tatsumi. "Oxide Ion Conductivity in Perovskite Oxide for SOFC Electrolyte." In Perovskite Oxide for Solid Oxide Fuel Cells, 65–93. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-77708-5_4.

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Kaur, Gurbinder. "Interaction of Glass Seals/Electrodes and Electrolytes." In Solid Oxide Fuel Cell Components, 315–74. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25598-9_8.

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Kawakami, Akira. "Quick-Start-Up Type SOFC Using LaGaO3-Based New Electrolyte." In Perovskite Oxide for Solid Oxide Fuel Cells, 205–16. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-77708-5_10.

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Ebbesen, Sune Dalgaard, and Mogens Mogensen. "Carbon Dioxide Electrolysis for Production of Synthesis Gas in Solid Oxide Electrolysis Cells." In Advances in Solid Oxide Fuel Cells IV, 272–81. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470456309.ch25.

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Takada, Kazunori. "Solid-State Batteries with Oxide-Based Electrolytes." In Next Generation Batteries, 181–86. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6668-8_17.

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Langer, Frederieke, Robert Kun, and Julian Schwenzel. "Li7La3Zr2O12 and Poly(Ethylene Oxide) Based Composite Electrolytes." In Solid Electrolytes for Advanced Applications, 195–215. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31581-8_9.

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Osada, Norikazu. "Advances in High Temperature Electrolysis Using Solid Oxide Electrolysis Cells." In CO2 Free Ammonia as an Energy Carrier, 163–82. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4767-4_10.

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Venkateswaran, Viswanathan, Tim Curry, Christie Iacomini, and John Olenick. "Highly Efficient Solid Oxide Electrolyzer And Sabatier System." In Advances in Solid Oxide Fuel Cells and Electronic Ceramics, 105–14. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119211501.ch11.

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Conference papers on the topic "Solid oxide electrolyser"

1

Troskialina, L., Riniati, R. Indarti, S. Shoelarta, Y. Sofyan, D. G. Syarif, and D. Mansur. "Preparation and Characterizations of NiYSZ-based Anode for Solid Oxide Fuel Cells and Solid Oxide Electrolyser Cells." In 2nd International Seminar of Science and Applied Technology (ISSAT 2021). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/aer.k.211106.065.

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Zhu, Bin, Juncai Sun, Xueli Sun, Song Li, Wenyuan Gao, Xiangrong Liu, and Zhigang Zhu. "Compatible Cathode Materials for High Performance Low Temperature (300–600°C) Solid Oxide Fuel Cells." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97279.

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We have made extensive efforts to develop various compatible electrode materials for the ceria-based composite (CBC) electrolytes, which have been, reported as most advanced LTSOFC electrolyte materials (Zhu, 2003). The electrode materials we have investigated can be classified as four categories: i) LSCCF (LaSrCoCaFeO) and BSCF perovskite oxides applied for our CBC electrolyte LTSOFCs; ii) LFN (LaFeO-based oxides, e.g. LaFe0.8Ni0.2O3) perovskite oxides; iii) lithiated oxides: e.g. LiNiOx, LiVOx or LiCuOx are typical cathode examples for the CBC LTSOFCs; iv) other mixed oxide systems, most common in a mixture of two-oxide phases, such CuOx-NiOx, CuO-ZnO etc. systems with or without lithiation are developed for the CBC systems, especially for direct alcohol LTSOFCs. These cathode materials used for the CBC electrolyte LTSOFCs have demonstrated excellent performances at 300–600°C, e.g. 1000 mWcm−2 was achieved at 580°C. The LTSOFCs can be operated with a wide range of fuels, e.g. hydrogen, methanol, ethanol etc with great potential for applications.
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Sohal, M. S., J. E. O’Brien, C. M. Stoots, V. I. Sharma, B. Yildiz, and A. Virkar. "Degradation Issues in Solid Oxide Cells During High Temperature Electrolysis." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33332.

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Idaho National Laboratory (INL) is performing high-temperature electrolysis (HTE) research to generate hydrogen using solid oxide electrolysis cells (SOECs). The project goals are to address the technical and degradation issues associated with the SOECs. This paper provides a summary of ongoing INL and INL-sponsored activities aimed at addressing SOEC degradation. These activities include stack testing, post-test examination, degradation modeling, and issues that need to be addressed in the future. Major degradation issues relating to solid oxide fuel cells (SOFC) are relatively better understood than those for SOECs. Some of the degradation mechanisms in SOFCs include contact problems between adjacent cell components, microstructural deterioration (coarsening) of the porous electrodes, and blocking of the reaction sites within the electrodes. Contact problems include delamination of an electrode from the electrolyte, growth of a poorly (electronically) conducting oxide layer between the metallic interconnect plates and the electrodes, and lack of contact between the interconnect and the electrode. INL’s test results on HTE using solid oxide cells do not provide clear evidence as to whether different events lead to similar or drastically different electrochemical degradation mechanisms. Post-test examination of the SOECs showed that the hydrogen electrode and interconnect get partially oxidized and become nonconductive. This is most likely caused by the hydrogen stream composition and flow rate during cooldown. The oxygen electrode side of the stacks seemed to be responsible for the observed degradation because of large areas of electrode delamination. Based on the oxygen electrode appearance, the degradation of these stacks was largely controlled by the oxygen electrode delamination rate. Virkar et al. [19–22] have developed a SOEC model based on concepts in local thermodynamic equilibrium in systems otherwise in global thermodynamic nonequilibrium. This model is under continued development. It shows that electronic conduction through the electrolyte, however small, must be taken into account for determining local oxygen chemical potential within the electrolyte. The chemical potential within the electrolyte may lie out of bounds in relation to values at the electrodes in the electrolyzer mode. Under certain conditions, high pressures can develop in the electrolyte just under the oxygen electrode (anode)/electrolyte interface, leading to electrode delamination. This theory is being further refined and tested by introducing some electronic conduction in the electrolyte.
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O’Brien, J. E., C. M. Stoots, J. S. Herring, and J. Hartvigsen. "Hydrogen Production Performance of a 10-Cell Planar Solid-Oxide Electrolysis Stack." In ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2005. http://dx.doi.org/10.1115/fuelcell2005-74168.

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An experimental study is under way to assess the performance of solid-oxide cells operating in the steam electrolysis mode for hydrogen production over a temperature range of 800 to 900°C. Results presented in this paper were obtained from a ten-cell planar electrolysis stack, with an active area of 64 cm2 per cell. The electrolysis cells are electrolyte-supported, with scandia-stabilized zirconia electrolytes (∼140 μm thick), nickel-cermet steam/hydrogen electrodes, and manganite air-side electrodes. The metallic interconnect plates are fabricated from ferritic stainless steel. The experiments were performed over a range of steam inlet mole fractions (0.1–0.6), gas flow rates (1000–4000 sccm), and current densities (0 to 0.38 A/cm2). Steam consumption rates associated with electrolysis were measured directly using inlet and outlet dewpoint instrumentation. Cell operating potentials and cell current were varied using a programmable power supply. Hydrogen production rates up to 100 Normal liters per hour were demonstrated. Values of area-specific resistance and stack internal temperatures are presented as a function of current density. Stack performance is shown to be dependent on inlet steam flow rate.
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O’Brien, J. E., C. M. Stoots, J. Stephen Herring, and G. L. Hawkes. "Comparison of a One-Dimensional Model of a High-Temperature Solid-Oxide Electrolysis Stack With CFD and Experimental Results." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81921.

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A one-dimensional model has been developed to predict the thermal and electrochemical behavior of a high-temperature steam electrolysis stack. This electrolyzer model allows for the determination of the average Nernst potential, cell operating voltage, gas outlet temperatures, and electrolyzer efficiency for any specified inlet gas flow rates, current density, cell active area, and external heat loss or gain. The model includes a temperature-dependent area-specific resistance (ASR) that accounts for the significant increase in electrolyte ionic conductivity that occurs with increasing temperature. Model predictions are shown to compare favorably with results obtained from a fully 3-D computational fluid dynamics model. The one-dimensional model was also employed to demonstrate the expected trends in electrolyzer performance over a range of operating conditions including isothermal, adiabatic, constant steam utilization, constant flow rate, and the effects of operating temperature.
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Sun, F., H. Liao, N. Zhang, O. Rapaud, and C. Coddet. "Plasma Sprayed Electrolyte of Magnesium Doped Lanthanum Silicate with Apatite-Type Structure." In ITSC2010, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. DVS Media GmbH, 2010. http://dx.doi.org/10.31399/asm.cp.itsc2010p0880.

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Abstract Magnesium doped lanthanum silicate with apatite-type structure was prepared by solid state sintering, as a solid electrolyte for intermediate-temperature solid oxide fuel cells. The electrolyte layers were fabricated by APS, followed by post heat treatments, and their structures and phase were characterized by SEM and XRD. It is showed that an amount of amorphous oxides exist in as-sprayed electrolyte layer, and then disappear after a post heat treatment in air furnace at temperature up to 1000°C. The gas permeation of electrolyte layers was measured by a specific instrument with pure H2 and O2 at room temperature. The conductivity of plasma sprayed electrolytes was studied by impendence spectroscopy in the range of 500-900°C in air.
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Persky, J., D. Beeaff, S. Menzer, D. Storjohann, and G. Coors. "Spray Coating of Electrolyte Films for Solid Oxide Fuel Cells." In ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/fuelcell2008-65100.

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Fabrication of defect free co-sintered electrolytes with thickness between 12 μm and 40μm has been demonstrated on planar and tubular cells produced via a spray coating process. Leak testing using a helium leak method showed low diffusional leak rates for cells using optimized spray parameters. The electrolytes were characterized using scanning electron microscopy to qualitatively assess pin holes. Average open circuit voltages (OCVs) of 1080 mV were obtained on tubular cells with spray-coated electrolytes using 3% humidified hydrogen as the fuel. This paper presents spray coating as a viable, cost effective method for electrolyte application in co-fired, anode supported SOFCs.
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O’Brien, J. E., C. M. Stoots, J. S. Herring, and P. A. Lessing. "Performance Characterization of Solid-Oxide Electrolysis Cells for Hydrogen Production." In ASME 2004 2nd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2004. http://dx.doi.org/10.1115/fuelcell2004-2474.

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An experimental study has been completed to assess the hydrogen-production performance of single solid-oxide electrolysis cells operating over a temperature range of 800 to 900°C. The experiments were performed over a range of steam inlet partial pressures (2.3 – 12.2 kPa), carrier gas flow rates (50–200 sccm), and current densities (−0.75 to 0.25 A/cm2) using single electrolyte-supported button cells of scandia-stabilized zirconia. Steam consumption rates associated with electrolysis were measured directly using inlet and outlet dewpoint instrumentation. Cell operating potentials and cell current were varied using a programmable power supply. Values of area-specific resistance and hydrogen production rate are presented as a function of current density. Cell performance is shown to be continuous from the fuel-cell mode to the electrolysis mode of operation. The effects of steam starvation and thermal cycling on cell performance parameters are discussed. Laboratory capabilities are currently being expanded to allow for testing and characterization of multiple-cell electrolysis stacks. Some fundamental differences between the fuel-cell and electrolysis modes of operation have been summarized.
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Bloomfield, Valerie J., and Robert Townsend. "Hydrodynamic Direct Carbon Fuel Cell." In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6593.

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There are many possibilities for the direct carbon fuel cell approach including hydroxide and molten carbonate electrolytes, solid oxides capable of consuming dry carbon, and hybrids of solid oxide and molten carbonate technologies. The challenges in fabricating this type of fuel cell are many including how to transport the dry solids into the reactant chamber and how to transport the spent fuel (ash) out of the chamber for continuous operation[1]. We accomplish ash removal by utilizing a hydrodynamic approach, where inert gas or steam is injected into the anode chamber causing the carbon particles to circulate. This provides a means of moving the particles to a location where they can be separated or removed from the system. The graphic below illustrates how we segregate the spent fuel from the fresh fuel by creating multiple chambers. Each sequential chamber will have a reduced performance until the fuel is fully spent. At that point, the electrolyte/ash mixture can be removed from the cell area and cleaned for recycling or discarded.
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Yang, Man, Zhigang Xu, Salil Desai, Dhananjay Kumar, and Jagannathan Sankar. "Fabrication of Novel Single-Chamber Solid Oxide Fuel Cells Towards Green Technology." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12627.

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Solid Oxide Fuel Cell (SOFC) is a green energy technology that offers a cleaner and more efficient alternative to fossil fuels. The fabrication of miniaturized device structure for fuel cell manufacturing is a viable method for improving their efficiency. In this research, single chamber-SOFC with inter-digitized structure of electrolyte and electrodes has been developed by two novel methods. In the deposition method, the SC-SOFC design patterns were created with photolithography and micro-structured thin film electrolytes and electrodes were prepared with pulsed laser deposition (PLD). In the direct-writing method, micro-structured electrodes were injected on electrolyte substrates. These studies showed good potential of manufacturing methods for fabricating novel type of fuel cell design.
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Reports on the topic "Solid oxide electrolyser"

1

Manohar S. Sohal, Anil V. Virkar, Sergey N. Rashkeev, and Michael V. Glazoff. Modeling Degradation in Solid Oxide Electrolysis Cells. Office of Scientific and Technical Information (OSTI), September 2010. http://dx.doi.org/10.2172/993195.

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Starr, T. L. Modeling for CVD of Solid Oxide Electrolyte. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/885565.

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S. Bandopadhyay and N. Nagabhushana. CRACK GROWTH ANALYSIS OF SOLID OXIDE FUEL CELL ELECTROLYTES. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/822680.

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Manohar Sohal. Degradation in Solid Oxide Cells During High Temperature Electrolysis. Office of Scientific and Technical Information (OSTI), May 2009. http://dx.doi.org/10.2172/957533.

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Manohar Motwani. Modeling Degradation in Solid Oxide Electrolysis Cells - Volume II. Office of Scientific and Technical Information (OSTI), September 2011. http://dx.doi.org/10.2172/1031675.

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C. M. Stoots, J. E. O'Brien, K. G. Condie, L. Moore-McAteer, J. J. Hartvigsen, and D. Larsen. 2500-Hour High Temperature Solid-Oxide Electrolyzer Long Duration Test. Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/971360.

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Dr. Hamid Garmestani and Dr. Stephen Herring. Microstructure Sensitive Design and Processing in Solid Oxide Electrolyzer Cell. Office of Scientific and Technical Information (OSTI), June 2009. http://dx.doi.org/10.2172/962649.

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Gorte, Raymond J., and John M. Vohs. The Development of Nano-Composite Electrodes for Solid Oxide Electrolyzers. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1124583.

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J.E. O'Brien, X. Zhang, R.C. O'Brien, and G.L. Hawkes. Summary Report on Solid-oxide Electrolysis Cell Testing and Development. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1042374.

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Liaw, B. Y., and S. Y. Song. Modifying zirconia solid electrolyte surface property to enhance oxide transport. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/460197.

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