Control of Co content and SOFC cathode performance in Y 1−y Sr 2+y Cu 3−x Co x O 7+δ

Simo, F; Payne, Julia L.; Demont, Antoine; Sayers, Ruth; Li, Ming; Collins, Christopher M.; Pitcher, Michael J.; Claridge, John B.; Rosseinsky, M. J.

doi:10.1016/j.solidstatesciences.2014.07.013

Cited by 5 publications

(5 citation statements)

References 43 publications

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“…Arrhenius plots of ASR values are not reported, and a possible slope variation cannot be observed. On the contrary, for Y 1−x Sr 2+x Cu 3-y Co y O 7 compounds, a drastic increase of ASR was reported when reducing the temperature from 700 to 650°C [25]. The authors claimed that it is related to electrochemical decomposition, but do not explain why it occurs only in this temperature range.…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 93%

“…Stability improvements were obtained by entirely replacing barium with strontium and copper in the Cu(1)-O chains with cobalt. Šimo et al [25] evaluated the electrochemical performance of the Y 1−x Sr 2+x Cu 3−y Co y O 7 materials. Conductivities between 55 and 70 S cm − 1 in the 500-700°C range and an ASR equal to 0.08 Ω cm 2 at 700°C were measured for the sample Y 0.95 Sr 0.05 Cu 1.7 Co 1.3 O 7 screen-printed on GDC support pellet.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical characterization of PrBa2−xSrxCu3O6+δ layered oxides as innovative and efficient oxygen electrode for IT-SOFCs

et al. 2020

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PrBa 2 Cu 3 O 6+δ (P) and PrBa 1.5 Sr 0.5 Cu 3 O 6+δ (PS) layered perovskite-type oxides are synthesized and characterized as oxygen electrodes in IT-SOFCs. The layered structure of P and PS compounds is constituted by the regular alternation along the crystallographic c axis of Pr O planes, Cu 2+ chains (CN = 4) and Cu 3+ pyramidal (CN = 5) layers. Interesting features of the PrBa 2 Cu 3 O 6+δ structure are the absence of cobalt, the presence of aliovalent cations and large amounts of oxygen vacancies. The substitution of 25% Ba with Sr is evaluated in order to improve the electronic conductivity of the undoped material. The compounds are synthesized via Citrate-Nitrate procedure and characterized by XRPD, 4-probe conductivity tests (100-800°C) and EIS measurements on symmetric cells in air varying the temperature (450-850°C). SEM images of post mortem cells are collected to evaluate the adhesion between components, layers thickness and particle morphology. Sr doping does not significantly improve the electrical conductivity but prompts a considerable hysteresis in the P sample between the cooling and the heating ramps. Conductivity values are lower than 100 S cm − 1 , but no electrical limitations are observed in EIS results. The introduction of a thin PrDC interlayer greatly reduces the Area Specific Resistances for both the compounds and the 0.15 Ω cm 2 target is almost fulfilled at 600°C (0.17 Ω cm 2 for PS + PrDC sample).

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Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Electrochemical characterization of PrBa2−xSrxCu3O6+δ layered oxides as innovative and efficient oxygen electrode for IT-SOFCs

et al. 2020

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“…The cathode helps improve SOFC performance by minimizing power loss and offering a good electrical connection between the electrodes and interconnected components. [110] The desirable properties of a cathode include excellent porosity and stability, excellent electrical conductivity, inactivity to electrolyte materials, and excellent catalytic activity. [110,111] Currently, the most common cathode for high-temperature (HT)-SOFCs with YSZ electrolyte is La 1Àx Sr x MnO 3 (LSM) perovskite.…”

Section: Cathodesmentioning

confidence: 99%

“…[110] The desirable properties of a cathode include excellent porosity and stability, excellent electrical conductivity, inactivity to electrolyte materials, and excellent catalytic activity. [110,111] Currently, the most common cathode for high-temperature (HT)-SOFCs with YSZ electrolyte is La 1Àx Sr x MnO 3 (LSM) perovskite. However, under low-temperature conditions, the activation energy and polarization resistance of LSM increase, and SOFC performance deteriorates.…”

Section: Cathodesmentioning

confidence: 99%

Advances and Perspectives on Solid Oxide Fuel Cells: From Nanotechnology to Power Electronics Devices

Arshad,

Yangkou Mbianda,

Ali

et al. 2023

Energy Tech

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Solid oxide fuel cells (SOFCs) hold an important place in energy conversion and storage systems due to their fuel flexibility, high efficiency, and environmental sustainability. The scorching temperature (≥ 800 °C) to operate SOFCs results in shorter lifespan due to rapid deterioration of accompanying components. Nanomaterials have attained considerable attention in recent years due to their great technological importance in fuel cell technology. Nanoengineering of the architectures of known materials and adopting composite approach can effectively enhance the active sites for electrode reactions. The use of nanotechnology will make SOFCs environment‐friendly and sustainable through green manufacturing processes of nanotechnology. Overviews of the contributions of nanotechnology and power electronics technologies to SOFCs, the transition of SOFCs from macro to nanotechnology, the significance of nanomaterials in SOFCs, dynamic modeling, the function of optimization techniques, and the requirement for power electronics converters in SOFCs are all provided in this piece of work. The applications of SOFCs in different sectors, prominent institutes/labs and companies involved in SOFCs’ research, future challenges and perspectives were also highlighted.This article is protected by copyright. All rights reserved.

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“…Cathode materials must improve fuel cell performance by reducing power losses and providing great electrical contact between interconnected components and the electrode [41]. Therefore, they must present features such as good catalytic activity, high electrical conductivity, porosity and stability, while at the same time being unreactive with the electrolyte material [41,42]. Currently, a commonly cathode material that can be used at high temperatures is LSM perovskite (La 1-…”

Section: Cathodementioning

confidence: 99%

Novel materials for solid oxide fuel cell technologies: A literature review

Silva

Souza

2017

International Journal of Hydrogen Energy

334

110

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This study aims to review novel materials for solid oxide fuel cell (SOFC) applications covered in literature. Thence, it was found that current SOFC operating conditions lead to issues, such as carbon surface deposition, sulfur poisoning and quick component degradation at high temperatures, which make it unsuitable for a few applications. Therefore, many researches are focused on cell performance enhancement through replacing the materials being used in order to improve properties and/or reduce operating temperatures. Most modifications in the anode aim to avoid some issues concerning conventionally used Ni-based materials, such as carbon deposition and sulfur poisoning, besides enhancing catalytic activity, once this component is directly exposed to the fuel. It was also found literature about the cathode with the aim of developing a material with enhanced properties in a wider temperature range, which has been compared to the currently used one: LSM perovskite (La 1-x Sr x MnO 3). Novel electrolyte materials can have ionic or protonic conductivity, thus performance degradation must be avoided at several operating conditions. In order to enhance its electrochemical performance, different materials for electrodes (cathode and anode) and electrolytes have been assessed herein.

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Control of Co content and SOFC cathode performance in Y 1−y Sr 2+y Cu 3−x Co x O 7+δ

Cited by 5 publications

References 43 publications

Electrochemical characterization of PrBa2−xSrxCu3O6+δ layered oxides as innovative and efficient oxygen electrode for IT-SOFCs

Electrochemical characterization of PrBa2−xSrxCu3O6+δ layered oxides as innovative and efficient oxygen electrode for IT-SOFCs

Advances and Perspectives on Solid Oxide Fuel Cells: From Nanotechnology to Power Electronics Devices

Novel materials for solid oxide fuel cell technologies: A literature review

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