Tailoring Protonic and Mixed Protonic/Electronic Conductivity of Barium Zirconate by Y and Pr Co-Doping for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)

2010 ◽  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electronic Conductivity ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Co Doping

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.

Synthesis and Characterization of BaZr0.8Y0.2O3 Protonic Conductor for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)

2006 ◽  
Vol 972 ◽  
Author(s):  
Alessandra D'Epifanio ◽  
Emiliana Fabbri ◽  
Elisabetta Di Bartolomeo ◽  
Silvia Licoccia ◽  
Enrico Traversa
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Sol Gel ◽  
Cell Polarization ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Protonic Conductor ◽  
Molar Ratios

AbstractBarium zirconate BaZr0.8Y0.2O3-δ, to be used as protonic conductor under hydrogen containing atmosphere in intermediate temperature (500-700°C) solid oxide fuel cells (IT-SOFCs) was prepared using a sol-gel technique to produce materials with controlled chemical structure and microstructural properties. Several synthetic procedures were investigated, dissolving the metal cations in two solvents (water and ethylene glycol) and using different molar ratios of citric acid with respect to the total metal content. A single phase was obtained at temperature as low as 1100°C. To verify the chemical stability, all the sintered oxides were exposed to CO2 and the phase composition of the resulting specimens was investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Fuel cell polarization curves on symmetric Pt/BZY20/Pt cells of different thickness were measured at intermediate temperatures (500-700°C).

Effect of Co doping on the properties of Sr0.8Ce0.2MnO3−δ cathode for intermediate-temperature solid-oxide fuel cells

2008 ◽  
Vol 33 (17) ◽  
pp. 4681-4688 ◽  
Author(s):  
Haitao Gu ◽  
Han Chen ◽  
Ling Gao ◽  
Yifeng Zheng ◽  
Xiaofang Zhu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Co Doping
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