A highly active and stable hybrid oxygen electrode for reversible solid oxide cells

2021 ◽  
Author(s):  
Zhe Zhao ◽  
Huiying Qi ◽  
Shuai Tang ◽  
Chao Zhang ◽  
Xiuling Wang ◽  
...  
Keyword(s):  
Oxygen Electrode ◽  
Solid Oxide ◽  
Highly Active ◽  
Stable Hybrid

Nickel-substituted Ba0.5Sr0.5Co0.8Fe0.2O3−δ: a highly active perovskite oxygen electrode for reduced-temperature solid oxide fuel cells

2019 ◽  
Vol 7 (19) ◽  
pp. 12343-12349 ◽  
Author(s):  
Lu Li ◽  
Hua Yang ◽  
Zhenghui Gao ◽  
Yaping Zhang ◽  
Feifei Dong ◽  
...  
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Perovskite Structure ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Cubic Symmetry ◽  
Highly Active ◽  
Oxygen Kinetics ◽  
Kinetics Of ◽  
Reduced Temperature

Nickel substitution contributes to sustained cubic-symmetry perovskite structure and fast oxygen kinetics of Ba0.5Sr0.5Co0.7Fe0.2Ni0.1O3−δ cathode material, enabling superior electrochemical activity and durability for ORR.

scholarly journals Computational engineering of the oxygen electrode-electrolyte interface in solid oxide fuel cells

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Kaiming Cheng ◽  
Huixia Xu ◽  
Lijun Zhang ◽  
Jixue Zhou ◽  
Xitao Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Microstructure Evolution ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Ohmic Loss ◽  
Oxide Fuel ◽  
Computational Engineering ◽  
Electrolyte Interface

AbstractThe Ce0.8Gd0.2O2−δ (CGO) interlayer is commonly applied in solid oxide fuel cells (SOFCs) to prevent chemical reactions between the (La1−xSrx)(Co1−yFey)O3−δ (LSCF) oxygen electrode and the Y2O3-stabilized ZrO2 (YSZ) electrolyte. However, formation of the YSZ–CGO solid solution with low ionic conductivity and the SrZrO3 (SZO) insulating phase still happens during cell production and long-term operation, causing poor performance and degradation. Unlike many experimental investigations exploring these phenomena, consistent and quantitative computational modeling of the microstructure evolution at the oxygen electrode–electrolyte interface is scarce. We combine thermodynamic, 1D kinetic, and 3D phase-field modeling to computationally reproduce the element redistribution, microstructure evolution, and corresponding ohmic loss of this interface. The influences of different ceramic processing techniques for the CGO interlayer, i.e., screen printing and physical laser deposition (PLD), and of different processing and long-term operating parameters are explored, representing a successful case of quantitative computational engineering of the oxygen electrode–electrolyte interface in SOFCs.

Highly active and CO2-tolerant Sr2Fe1.3Ga0.2Mo0.5O6-δ cathode for intermediate-temperature solid oxide fuel cells

2020 ◽  
Vol 450 ◽  
pp. 227722 ◽  
Author(s):  
Chunming Xu ◽  
Kening Sun ◽  
Xiaoxia Yang ◽  
Minjian Ma ◽  
Rongzheng Ren ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Highly Active

Composite of calcium cobaltite with praseodymium-doped ceria: A promising new oxygen electrode for solid oxide cells

2021 ◽  
Author(s):  
Allan J.M. Araújo ◽  
Francisco J.A. Loureiro ◽  
Laura I.V. Holz ◽  
João P.F. Grilo ◽  
Daniel A. Macedo ◽  
...  
Keyword(s):  
Oxygen Electrode ◽  
Solid Oxide ◽  
Doped Ceria
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