High-performance anode-supported solid oxide fuel cell with impregnated electrodes

Осинкин, Д.А.; Богданович, Н. М.; Береснев, С. М.; Журавлев, В. Д.

doi:10.1016/j.jpowsour.2015.04.098

Cited by 37 publications

(10 citation statements)

References 29 publications

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“…8(b). Usually, on such impedance spectra, the reaction of charge transfer at high frequency, the absorption and surface diffusion process at medium frequency, and gas diffusion process at low frequency is expected 29,50 . The high-frequency arc can be distinguished clearly, while the medium-and low-frequency arcs overlap each other.…”

Section: Intermediate Temperature Fuel Cell Testsmentioning

confidence: 99%

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Cassidy

et al. 2016

J. Mater. Chem. A

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Perovskite electrodes have been considered as an alternative to Ni-YSZ cermet-based anodes as they afford better tolerance towards coking and impurities and due to redox stability can allow very high levels of fuel utilisation. Unfortunately performance levels have rarely been sufficient, especially for a second generation anode supported concept. A-site deficient lanthanum and calcium co-doped SrTiO3, La0.2Sr0.25Ca0.45TiO3 (LSCTA-) shows promising thermal, mechanical and electrical properties and has been investigated in this study as a potential anode support material for SOFCs. Flat multilayer ceramics cells were fabricated by aqueous tape casting and co-sintering, comprising a 450-µm thick porous LSCTA-scaffold support, a dense YSZ electrolyte and a thin layer of La0.8Sr0.2CoO3-δ (LSC)-La0.8Sr0.2FeO3-δ ( LSF)-YSZ cathode. Impregnation of a small content of Ni significantly enhanced fuel cell performance over naked LSCTA-. Use of ceria as a co-catalyst was found to improve the microstructure and stability of impregnated Ni and this in combination with the catalytic enhancement from ceria significantly improved performance over Ni impregnation alone. With addition of CeO2 and Ni to a titanate scaffold anode that had been pre-reduced at 1000 o C, a maximum powder density of 0.96Wcm -2 can be achieved at 800 o C using humidified hydrogen as fuel. The encouraging results show that an oxide anode material, LSCTA-can be used as anode support with YSZ electrolyte heralding a new option for SOFC development.

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Section: Intermediate Temperature Fuel Cell Testsmentioning

confidence: 99%

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Cassidy

et al. 2016

J. Mater. Chem. A

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show abstract

“…[10][11][12] Clearly impregnation of electrodes is a low cost route to fabrication and, if applied successfully to give suitable nanostructured interfaces, enhanced performance will be delivered. The scaffold can be processed using traditional bulk ceramic methods to optimize porosity and mechanical attributes whereas the infiltrate can be dried and fired under a different, less harsh set of conditions, to result in tailored microstructures.…”

Section: Introductionmentioning

confidence: 99%

“…This has the advantage of only placing the small amounts catalyst on the surface, where it can be active and not in the bulk where it is of less use. Because of this, impregnated electrodes often show higher power density and lower resistance compared to electrodes fabricated using traditional techniques . Clearly impregnation of electrodes is a low cost route to fabrication and, if applied successfully to give suitable nanostructured interfaces, enhanced performance will be delivered.…”

Section: Introductionmentioning

confidence: 99%

Tailoring SOFC Electrode Microstructures for Improved Performance

Connor

Yue

Savaniu

et al. 2018

Advanced Energy Materials

203

108

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The key technical challenges that fuel cell developers need to address are performance, durability, and cost. All three need to be achieved in parallel; however, there are often competitive tensions, e.g., performance is achieved at the expense of durability. Stability and resistance to degradation under prolonged operation are key parameters. There is considerable interest in developing new cathodes that are better able to function at lower temperature to facilitate low cost manufacture. For anodes, the ability of the solid oxide fuel cell (SOFC) to better utilize commonly available fuels at high efficiency, avoid coking and sulfur poisoning or resistance to oxidation at high utilization are all key. Optimizing a new electrode material requires considerable process development. The use of solution techniques to impregnate an already optimized electrode skeleton, offers a fast and efficient way to evaluate new electrode materials. It can also offer low cost routes to manufacture novel structures and to fine tune already known structures. Here impregnation methodologies are discussed, spectral and surface characterization are considered, and the recent efforts to optimize both cathode and anode functionalities are reviewed. Finally recent exemplifications are reviewed and future challenges and opportunities for the impregnation approach in SOFCs are explored.

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“…Such wet impregnation/infiltration has been proved to be a very effective approach to fabricate and/or optimize SOFC anodes to obtain better performance and stability. However, too many repeated cycles are required to get the desired impregnation loading and microstructures, which lead to the complexity and instability for fabrication [22][23][24][25].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

Wang

Jiao

et al. 2017

Journal of Alloys and Compounds

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High-performance anode-supported solid oxide fuel cell with impregnated electrodes

Cited by 37 publications

References 29 publications

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Tailoring SOFC Electrode Microstructures for Improved Performance

A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

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High-performance anode-supported solid oxide fuel cell with impregnated electrodes

Cited by 37 publications

References 29 publications

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO3

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO3

Tailoring SOFC Electrode Microstructures for Improved Performance

A hierarchical porous microstructure for improving long-term stability of Ni1-xCux/SDC anode-supported IT-SOFCs fueled with dry methane

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Product

Resources

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Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃

Demonstration of high performance in a perovskite oxide supported solid oxide fuel cell based on La and Ca co-doped SrTiO₃