High-performance SOFCs with impregnated Sr2Fe1.5Mo0.5O6-δ anodes toward sulfur resistance

Han, Zongying; Wang, Yuhao; Yang, Yan‐Ru; Li, Leilei; Yang, Zhibin; Han, Min−Koo

doi:10.1016/j.jallcom.2017.01.341

Cited by 30 publications

(8 citation statements)

References 48 publications

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“…[108,109] Ni impregnation was conducted into a GDC scaffold that was produced with a mixture of nanoscale (5 nm) and larger commercial (0.5 µm) powders. [108,109] Ni impregnation was conducted into a GDC scaffold that was produced with a mixture of nanoscale (5 nm) and larger commercial (0.5 µm) powders.…”

Section: Electrolyte Materials Based Porous Scaffoldmentioning

confidence: 99%

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Tailoring SOFC Electrode Microstructures for Improved Performance

Connor

Yue

Savaniu

et al. 2018

Advanced Energy Materials

186

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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Section: Electrolyte Materials Based Porous Scaffoldmentioning

confidence: 99%

“…Gadolinium doped ceria ((Gd, Ce)O 2 , GDC) electrolyte material has also been used as a porous skeleton with subsequent infiltration as SOFC anodes . Ni impregnation was conducted into a GDC scaffold that was produced with a mixture of nanoscale (5 nm) and larger commercial (0.5 µm) powders .…”

Section: Impregnated Anodesmentioning

confidence: 99%

Tailoring SOFC Electrode Microstructures for Improved Performance

Connor

Yue

Savaniu

et al. 2018

Advanced Energy Materials

186

108

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“…Double perovskites have also been used as SOFC anodes through the infiltration technique . Unlike the traditional electrolyte supported SOFC single cell, a Sr 2 Fe 1.5 Mo 0.5 O 6− δ –Gd 0.1 Ce 0.9 O 2− δ (SFM‐GDC) infiltrated anode‐supported SOFC was fabricated by a low‐temperature co‐sintering technique . With the help of a Li 2 O sintering aid, crack‐free GDC electrolyte layer was obtained by sintering at 1150 °C.…”

Section: Nanostructured Perovskites For Electrocatalysis‐based Energymentioning

confidence: 99%

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

et al. 2018

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Perovskite oxides hold great promise as efficient electrocatalysts for various energy‐related applications owing to their low cost, flexible structure, and high intrinsic catalytic activity. However, conventional synthetic methods can only obtain perovskite catalysts with large particle sizes, small surface areas, and few morphological features, leading to limited catalytic activity and thus posing a major challenge toward real‐world applications. Reducing the size of bulk perovskites down to the nanosize represents an efficient way to improve the electrocatalytic performance. A comprehensive overview of recent progress in the nanostructuring of perovskites for catalyzing several key reactions in metal–air batteries, water splitting, and solid oxide fuel cells is provided. A range of synthetic protocols for making perovskite nanostructures are summarized, followed by an emphasis on how each method can be tailored to obtain high‐performing perovskite nanocatalysts. These recent advances highlight the enormous potential of nanosized perovskites for facilitating the electrocatalytic reactions. The remaining challenges and future directions are pointed out for the development of next‐generation perovskite‐based nanostructured catalysts.

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“…The mixed ionic‐electronic conductive property benefits the ambipolar diffusion of oxygen ions and electrons in the dual‐phase membranes. SFM has been demonstrated to have good sulfur resistance under 100 ppm H 2 S atmosphere . Moreover, SFM is found chemical compatible with ceria at high temperatures .…”

Section: Introductionmentioning

confidence: 99%

Dual‐phase membrane reactor for hydrogen separation with high tolerance to CO₂ and H₂S impurities

Cai

Cao

et al. 2018

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com)Catalytic membrane reactors based on oxygen-permeable membranes are recently studied for hydrogen separation because their hydrogen separation rates and separation factors are comparable to those of Pd-based membranes. New membrane materials with high performance and good tolerance to CO 2 and H 2 S impurities are highly desired. In this work, a new membrane material Ce 0.85 Sm 0.15 O 1.925 -Sr 2 Fe 1.5 Mo 0.5 O 6-δ (SDC-SFM) was prepared for hydrogen separation. It exhibits high conductivities at low oxygen partial pressures, which is benefit to electron transfer and ion diffusion. A high hydrogen separation rate of 6.6 mL cm −2 min −1 was obtained on a 0.5-mm-thick membrane coated with Ni/SDC catalyst at 900 C. The membrane reactor was operated steadily for 532 h under atmospheres containing CO 2 and H 2 S impurities. Various characterizations reveal that SDC-SFM has good stability in the membrane reactor for hydrogen separation. All facts confirm that SDC-SFM is promising for hydrogen separation in practical applications.

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High-performance SOFCs with impregnated Sr2Fe1.5Mo0.5O6-δ anodes toward sulfur resistance

Cited by 30 publications

References 48 publications

Tailoring SOFC Electrode Microstructures for Improved Performance

Tailoring SOFC Electrode Microstructures for Improved Performance

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

Dual‐phase membrane reactor for hydrogen separation with high tolerance to CO₂ and H₂S impurities

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High-performance SOFCs with impregnated Sr2Fe1.5Mo0.5O6-δ anodes toward sulfur resistance

Cited by 30 publications

References 48 publications

Tailoring SOFC Electrode Microstructures for Improved Performance

Tailoring SOFC Electrode Microstructures for Improved Performance

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

Dual‐phase membrane reactor for hydrogen separation with high tolerance to CO2 and H2S impurities

Contact Info

Product

Resources

About

Dual‐phase membrane reactor for hydrogen separation with high tolerance to CO₂ and H₂S impurities