Characterization of Sr2Fe1.5Mo0.5O6-δ -Gd0.1Ce0.9O1.95 symmetrical electrode for reversible solid oxide cells

Guo, Yangyang; Guo, Tianmin; Zhou, Shijie; Wu, Yujie; Chen, Hui; Ou, Xuemei; Ling, Yihan

doi:10.1016/j.ceramint.2019.02.179

Cited by 31 publications

(10 citation statements)

References 35 publications

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“…Combining SFM 0.5 with a second phase to form a composite cathode has also been explored, with the aim of enhancing the characteristics of the SFM 0.5 cathode. Typically, the composite cathode is formed by combining SFM 0.5 with an ionic conductor that possesses high ionic conductivity and low thermal expansion coefficient through mechanical mixing [92][93][94][95][96][97][98][99] . The main objective is to extend the total three-phase boundary (TPB) areas of the cathode to support the ORR activity.…”

Section: Formation Of Composite Cathodementioning

confidence: 99%

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Xie,

Cai,

Duan

et al. 2024

Energy Mater

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As a clean and efficient energy conversion device, solid oxide fuel cells have been garnering attention due to their environmentally friendly and fuel adaptability. Consequently, they have become one of the current research directions of new energy. The cathode, as the electrochemical reaction site of an oxidation atmosphere in solid oxide fuel cells, plays a key role in determining the output performance. In recent years, the development of double perovskite cathode materials with mixed ionic and electronic conductors has made significant progress in intermediate-temperature (600-800 °C) fuel cells. These materials have the potential to deliver higher power densities and improved stability, making them promising candidates for future fuel cell applications. The Fe-based double perovskite structure cathode material has gained extensive attention due to its adjustable crystal structure and performance, as it has A(A’) or B(B’) positions in its AA’BB’O6 structure. This material has several advantages, such as high oxygen catalytic activity, low thermal expansion coefficient, and compatibility with the thermal expansion of the electrolyte. An increasing number of researchers have been exploring the performance reaction mechanism of double perovskite by modifying and adjusting its material microstructure, crystal structure, and electronic structure. In this paper, the research progress of LnBaFe2O5 and Sr2Fe2-xMoxO6 double perovskite cathode materials is reviewed to highlight the effects of various modification methods developed on electrochemical performance of these materials. Furthermore, the potential future research directions of double perovskite cathode materials are prospected.

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Section: Formation Of Composite Cathodementioning

confidence: 99%

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Xie,

Cai,

Duan

et al. 2024

Energy Mater

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“…Applying SFM-GDC symmetrical electrode, the 300 μm-thick YSZ electrolyte-supported RSOECs with GDC buffer layers show acceptance electrochemical performance and can seamlessly switch between power generation and electrolysis modes with no obvious degradation after 20 h of short-term stability test working under humidified (3%H2O) H2 and 3%H2O-air atmospheres, respectively. [136] Cu-based cermet suitable for electrodes in RSSOECs based on the GDC electrolyte were developed. 137 The high stability, reversibility, catalytic activity and electrochemical performance make these electrodes promising for RSSOECs.…”

Section: Reversible Symmetrical Solid Oxide Electrolysis Cellsmentioning

confidence: 99%

Progress and potential for symmetrical solid oxide electrolysis cells

Tian

Abhishek

Yang

et al. 2022

Matter

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“…However, for the cases where the pristine perovskites exhibit noticeably superior characteristics compared with their derived counterparts, the occurrence of the phase transition may undermine the catalytic performance. Typically, the double perovskite Sr 2 Fe 1.5 Mo 0.5 O 6 –δ , known for its good redox stability and catalytic activity, represents a prime illustration of a perovskite that holds more potential than its derived Ruddlesden–Popper structure. − Nonetheless, the potential negative impact of the phase transition on catalytic performances is often overlooked in light of the overall performance enhancement from exsolution. , Therefore, there are still more opportunities for further improvement in reactivity by regulating the exsolution process. In addition, we also need to acknowledge that the resistance of pristine perovskites to the phase transition during exsolution can be considered as an indicator of their structural stability.…”

Section: Introductionmentioning

confidence: 99%

Fluorine-Stabilized BO₆ Octahedron of Host Perovskites for Robust Carbon Dioxide Electrolysis on Exsolved Catalysts

Zhang,

Zhu,

Gao

et al. 2023

ACS Catal.

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Exsolution of nanoparticles has become a prevalent technique for enhancing the catalytic activity of perovskites for carbon dioxide (CO2) electrolysis in solid oxide electrolysis cells. However, the potential negative impact of phase evolution of the host perovskite on catalytic performance is often overlooked in light of the overall performance enhancement from exsolution. Herein, we illustrate a facile fluorine doping strategy to suppress the phase transition of Sr2Fe1.2Ni0.3Mo0.5O6 –δ (SFN3M) during exsolution. The experimental characterizations combined with density functional theory calculations reveal that the incorporation of fluorine into the SFN3M lattice is beneficial for preserving the high oxidation states of B-site cations and inhibiting the lattice oxygen loss, resulting in a robust BO6 octahedron in the host perovskite. It is found that the well-preserved double perovskite structure exhibits a stronger interaction with CO2, thus enhancing the catalytic activity of F-doped exsolved SFN3M (F-SFN3M-red). Furthermore, the robust BO6 octahedron of the host perovskite significantly enhances the resistance of F-SFN3M-red to decomposition under high-voltage CO2 electrolysis, leading to the significantly increased carbon monoxide productivity over a broad voltage range. These findings highlight that the F doping strategy has great potential to aid the development of exsolved perovskites with high catalytic activity and stability for a wider range of electrocatalysis applications.

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Characterization of Sr2Fe1.5Mo0.5O6-δ -Gd0.1Ce0.9O1.95 symmetrical electrode for reversible solid oxide cells

Cited by 31 publications

References 35 publications

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Progress and potential for symmetrical solid oxide electrolysis cells

Fluorine-Stabilized BO₆ Octahedron of Host Perovskites for Robust Carbon Dioxide Electrolysis on Exsolved Catalysts

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Characterization of Sr2Fe1.5Mo0.5O6-δ -Gd0.1Ce0.9O1.95 symmetrical electrode for reversible solid oxide cells

Cited by 31 publications

References 35 publications

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Review on Fe-based double perovskite cathode materials for solid oxide fuel cells

Progress and potential for symmetrical solid oxide electrolysis cells

Fluorine-Stabilized BO6 Octahedron of Host Perovskites for Robust Carbon Dioxide Electrolysis on Exsolved Catalysts

Contact Info

Product

Resources

About

Fluorine-Stabilized BO₆ Octahedron of Host Perovskites for Robust Carbon Dioxide Electrolysis on Exsolved Catalysts