Effect of samaria-doped ceria (SDC) interlayer on the performance of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ /SDC composite oxygen electrode for reversible solid oxide fuel cells

2017 ◽  
Vol 225 ◽  
pp. 114-120 ◽  
Author(s):  
Kazuki Shimura ◽  
Hanako Nishino ◽  
Katsuyoshi Kakinuma ◽  
Manuel E. Brito ◽  
Hiroyuki Uchida
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel

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.

Gadolinium doped ceria nanostructured oxide for intermediate temperature solid oxide fuel cells

2021 ◽  
pp. 160444
Author(s):  
S.U. Costilla-Aguilar ◽  
M.I. Pech-Canul ◽  
M.J. Escudero ◽  
R.F. Cienfuegos-Pelaes ◽  
J.A. Aguilar-Martínez
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Nanostructured Oxide ◽  
Gadolinium Doped Ceria

scholarly journals SDC-Infiltrated Microporous Silver Membrane with Superior Resistance to Thermal Agglomeration for Cathode-Supported Solid Oxide Fuel Cells

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2181 ◽  
Author(s):  
Tsung-Han Lee ◽  
Jong Baek ◽  
Liangdong Fan ◽  
Florencia Wiria ◽  
Pei-Chen Su ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Precursor Solution ◽  
Solid Oxide ◽  
Pore Surface ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Microporous Structure ◽  
Ion Conducting ◽  
Porous Silver

This work presents a microporous silver cathode membrane reinforced with infiltration of samarium-doped ceria (SDC). The ion-conducting SDC effectively confines the surface of a porous silver membrane to maintain microporous structure and prevents the electrode agglomeration. SDC precursor solution is fired together with silver membrane at 700 °C for 2 h and formed as a nanocrystalline SDC on the silver pore surface. The SDC-infiltrated microporous silver membrane shows superior resistance to agglomeration without noticeable change in microstructures even at 900 °C for 12 h, which makes it promising for the application of solid oxide fuel cells as a cathode support.

scholarly journals Semiconductor-ionic Membrane of LaSrCoFe-oxide-doped Ceria Solid Oxide Fuel Cells

2017 ◽  
Vol 248 ◽  
pp. 496-504 ◽  
Author(s):  
Baoyuan Wang ◽  
Yixiao Cai ◽  
Chen Xia ◽  
Jung-Sik Kim ◽  
Yanyan Liu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel
Sign in / Sign up

Export Citation Format

Share Document