Highly active and durable double-doped bismuth oxide-based oxygen electrodes for reversible solid oxide cells at reduced temperatures

2019 ◽  
Vol 7 (36) ◽  
pp. 20558-20566 ◽  
Author(s):  
Byung-Hyun Yun ◽  
Kyeong Joon Kim ◽  
Dong Woo Joh ◽  
Munseok S. Chae ◽  
Jong Jun Lee ◽  
...  
Keyword(s):  
Bismuth Oxide ◽  
Solid Oxide ◽  
Bismuth Oxides ◽  
Highly Active ◽  
Oxygen Electrodes ◽  
Co Doped

Highly conductive Dy and Y co-doped bismuth oxides combined with La0.8Sr0.2MnO3−δ significantly enhanced the ORR and OER as oxygen electrodes for reversible SOCs.

scholarly journals Highly active and stable Er0.4Bi1.6O3 decorated La0.76Sr0.19MnO3+δ nanostructured oxygen electrodes for reversible solid oxide cells

2017 ◽  
Vol 5 (24) ◽  
pp. 12149-12157 ◽  
Author(s):  
Na Ai ◽  
Na Li ◽  
Shuai He ◽  
Yi Cheng ◽  
Martin Saunders ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Solid Oxide ◽  
Nanostructured Electrode ◽  
Highly Active ◽  
Oxygen Electrodes ◽  
Solid Oxide Cell ◽  
Reversible Solid Oxide Cell ◽  
Excellent Stability

A directly assembled ESB decorated LSM nanostructured electrode exhibits high electrocatalytic activity and excellent stability in reversible solid oxide cell mode.

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

Structure and performance of Pr, Sm, Y co-doped cerium-based electrolyte for intermediate temperature solid oxide fuel cells

2021 ◽  
Vol 305 ◽  
pp. 130855
Author(s):  
Jie Kang ◽  
Chengyi Wen ◽  
Biao Wang ◽  
Wenqiang Feng ◽  
Shoushan Gao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
And Performance ◽  
Co Doped

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.

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