Effect of Sr and Al or Fe co-doping on the sinterability and conductivity of lanthanum silicate oxyapatite electrolytes for solid oxide fuel cells

2014 ◽  
Vol 39 (33) ◽  
pp. 19093-19101 ◽  
Author(s):  
Xiao Guo Cao ◽  
San Ping Jiang
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Co Doping ◽  
Lanthanum Silicate

Solid Oxide Fuel Cells Using Lanthanum Silicate Electrolyte Films

2013 ◽  
Vol 57 (1) ◽  
pp. 1135-1141
Author(s):  
H. Mieda ◽  
A. Mineshige ◽  
T. Nishimoto ◽  
M. Tange ◽  
Y. Daiko ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Lanthanum Silicate

Triggering interfacial activity of traditional La0.5Sr0.5MnO3 cathode with Co-doping for proton-conducting solid oxide fuel cells

2022 ◽  
Author(s):  
Yanru Yin ◽  
shoufu yu ◽  
Hailu Dai ◽  
Lei Bi
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Proton Conducting ◽  
Interfacial Activity ◽  
Co Doping ◽  
New Material ◽  
Improved Performance

Doping La0.5Sr0.5MnO3-δ (LSM) cathode with the Co element allows the new material La0.5Sr0.5Mn0.9Co0.1O3-δ (LSMCo) to show improved performance compared with the Co-free LSM for proton-conducting solid oxide fuel cells (H-SOFCs),...

Evaluation of SrTi1−xCoxO3 Perovskites (0 ≤ x ≤ 0.2) as Interconnect Materials for Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (5) ◽  
Author(s):  
Masashi Mori ◽  
Zhenwei Wang ◽  
Nobuyuki Serizawa ◽  
Takanori Itoh
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Linear Thermal Expansion Coefficient ◽  
Perovskite Phase ◽  
Linear Thermal Expansion ◽  
Secondary Phase ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Co Doping ◽  
Reducing Atmosphere

The compatibility of SrTi1−xCoxO3 perovskites (0 ≤ x ≤ 0.2) was evaluated for use as interconnect materials in solid oxide fuel cells (SOFCs). Although SrTi1−xCoxO3 perovskites have a single perovskite phase in the range of 0 ≤ x ≤ 0.2, it was observed for SrTi0.8Co0.2O3 that Co element agglomerated at the grain boundary during sintering. The dense SrTi0.8Co0.2O3 sample was destroyed and included Sr2TiO4 as a secondary phase after reducing treatment at 1000 °C. As a result of Co doping, the linear thermal expansion coefficient (TEC) increased remarkably with increasing Co content, but the TEC of SrTi0.9Co0.1O3 was comparable with those of SOFC cathodes and anodes. Co doping of SrTiO3 effectively increased electrical conductivity in air, whereas the conductivity of Co-doped SrTiO3 in a reducing atmosphere was much lower than that in air. This suggests that the Co ions3+/4+ in the perovskites were earlier reduced into Co2+ ions, compared to Ti4+ ions.

scholarly journals Fabrication of apatite-type lanthanum silicate films and anode supported solid oxide fuel cells using nano-sized printable paste

2014 ◽  
Vol 34 (2) ◽  
pp. 373-379 ◽  
Author(s):  
Hideki Yoshioka ◽  
Hiroyuki Mieda ◽  
Takahiro Funahashi ◽  
Atsushi Mineshige ◽  
Tetsuo Yazawa ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Lanthanum Silicate ◽  
Apatite Type

Effects of trivalent dopants on phase stability and catalytic activity of YBaCo4O7-based cathodes in solid oxide fuel cells

2018 ◽  
Vol 6 (34) ◽  
pp. 16412-16420 ◽  
Author(s):  
Ke-Yu Lai ◽  
Arumugam Manthiram
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Phase Stability ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Co Doping ◽  
Doping Effects ◽  
Trivalent Cations

In order to understand the doping and co-doping effects of trivalent cations (Al3+, Ga3+, and Fe3+) in the swedenborgite oxide YBaCo4O7 as a cathode in intermediate-temperature SOFCs, four series of YBaCo4O7-based materials, including YBaCo4−xAlxO7+δ, YBaCo4−x−yGaxAlyO7+δ, YBaCo3.2Ga0.8−xFexO7+δ, and YBaCo3.5−xAl0.5FexO7+δ, have been synthesized and investigated.

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