Barium carbonate as a synergistic catalyst for the H2O/CO2 reduction reaction at Ni–yttria stabilized zirconia cathodes for solid oxide electrolysis cells

2018 ◽  
Vol 6 (6) ◽  
pp. 2721-2729 ◽  
Author(s):  
Minghao Zheng ◽  
Shuang Wang ◽  
Yi Yang ◽  
Changrong Xia
Keyword(s):  
Barium Carbonate ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Lanthanum Manganite ◽  
Oxygen Electrodes ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells ◽  
Co2 Reduction Reaction

BaCO3 is primarily demonstrated as an excellent synergistic catalyst for efficient electro-reduction of H2O/CO2 to H2/CO at the state-of-the-art Ni–YSZ cathodes for solid oxide electrolysis cells with YSZ electrolytes and strontium doped lanthanum manganite oxygen electrodes.

Electrochemical Performance of Ni-YSZ, Ni/Ru-GDC, LSM-YSZ, LSCF and LSF Electrodes for Solid Oxide Electrolysis Cells

2010 ◽  
Author(s):  
P. Kim-Lohsoontorn ◽  
H.-B. Yim ◽  
J.-M. Bae
Keyword(s):  
Electrochemical Performance ◽  
Operating Conditions ◽  
Solid Oxide ◽  
Hydrogen Electrode ◽  
Anodic Reaction ◽  
Oxygen Electrodes ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells ◽  
Electrolysis Mode

The electrochemical performance of solid oxide electrolysis cells (SOECs) having nickel – yttria stabilized zirconia (Ni-YSZ) hydrogen electrode and a composite lanthanum strontium manganite – YSZ (La0.8Sr0.2MnO3−δ – YSZ) oxygen electrodes has been studied over a range of operating conditions temperature (700 to 900°C). Increasing temperature significantly increased electrochemical performance and hydrogen generation efficiency. Durability studies of the cell in electrolysis mode were made over 200 h periods (0.1 A/cm2, 800°C, and H2O/H2 = 70/30). The cell significantly degraded over the time (2.5 mV/h). Overpotentials of various SOEC electrodes were evaluated. Ni-YSZ as a hydrogen electrode exhibited higher activity in SOFC mode than SOEC mode while Ni/Ru-GDC presented symmetrical behavior between fuel cell and electrolysis mode and gave lower losses when compared to the Ni-YSZ electrode. All the oxygen electrodes gave higher activity for the cathodic reaction than the anodic reaction. Among the oxygen electrodes in this study, LSM-YSZ exhibited nearest to symmetrical behavior between cathodic and anodic reaction. Durability studies of the electrodes in electrolysis mode were made over 20–70 h periods. Performance degradations of the oxygen electrodes were observed (3.4, 12.6 and 17.6 mV/h for LSM-YSZ, LSCF and LSF, respectively). The Ni-YSZ hydrogen electrode exhibited rather stable performance while the performance of Ni/Ru-GDC decreased (3.4 mV/h) over the time. This was likely a result of the reduction of ceria component at high operating voltage.

Sr2Fe1.5Mo0.5O6-δ- Zr0.84Y0.16O2-δMaterials as Oxygen Electrodes for Solid Oxide Electrolysis Cells

Fuel Cells ◽  
2014 ◽  
Vol 14 (6) ◽  
pp. 1046-1049 ◽  
Author(s):  
J. Li ◽  
C. Zhong ◽  
X. Meng ◽  
H. Wu ◽  
H. Nie ◽  
...  
Keyword(s):  
Solid Oxide ◽  
Oxygen Electrodes ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

scholarly journals REBaCo2O5+δ (RE = Pr, Nd, and Gd) as promising oxygen electrodes for intermediate-temperature solid oxide electrolysis cells

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16332-16340 ◽  
Author(s):  
Shaoming Liu ◽  
Wenqiang Zhang ◽  
Yifeng Li ◽  
Bo Yu
Keyword(s):  
Double Perovskite ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxygen Electrodes ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

Double-perovskite REBaCo2O5+δ (RE = Pr, Nd, and Gd) oxides were synthesized and evaluated as oxygen electrodes for intermediate-temperature solid oxide electrolysis cells (IT-SOECs).

Sm0.5Sr0.5CoO3-Sm0.2Ce0.8O1.9Composite Oxygen Electrodes for Solid Oxide Electrolysis Cells

Fuel Cells ◽  
2013 ◽  
Vol 14 (1) ◽  
pp. 76-82 ◽  
Author(s):  
W. Jiang ◽  
Z. Lü ◽  
B. Wei ◽  
Z. H. Wang ◽  
X. B. Zhu ◽  
...  
Keyword(s):  
Solid Oxide ◽  
Oxygen Electrodes ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells
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