scholarly journals Synthesis and evaluation of double-layer electrodes using a Ni–BaCe0.50Zr0.27Y0.20Ni0.03O3−δ cermet with a fused-aggregate network structure as the hydrogen electrode of solid oxide cells

2018 ◽  
Vol 126 (3) ◽  
pp. 208-213
Author(s):  
Ryosuke NISHIKAWA ◽  
Hanako NISHINO ◽  
Manuel E. BRITO ◽  
Katsuyoshi KAKINUMA
Keyword(s):  
Double Layer ◽  
Network Structure ◽  
Solid Oxide ◽  
Hydrogen Electrode ◽  
Aggregate Network

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.

scholarly journals Pr and Ti co-doped Strontium Ferrite as a Novel Hydrogen Electrode for Solid Oxide Electrolysis Cell

2017 ◽  
Vol 232 ◽  
pp. 542-549 ◽  
Author(s):  
Lijuan Zhang ◽  
Xingbao Zhu ◽  
Zhiqun Cao ◽  
Zhihong Wang ◽  
Wenyuan Li ◽  
...  
Keyword(s):  
Strontium Ferrite ◽  
Solid Oxide ◽  
Electrolysis Cell ◽  
Hydrogen Electrode ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Co Doped

Design, fabrication and characterization of a double layer solid oxide fuel cell (DLFC)

2016 ◽  
Vol 332 ◽  
pp. 8-15 ◽  
Author(s):  
Guangjun Wang ◽  
Xiangying Wu ◽  
Yixiao Cai ◽  
Yuan Ji ◽  
Azra Yaqub ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Double Layer ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fabrication And Characterization

Gas transport in hydrogen electrode of solid oxide regenerative fuel cells for power generation and hydrogen production

2014 ◽  
Vol 39 (8) ◽  
pp. 3868-3878 ◽  
Author(s):  
Kyung Joong Yoon ◽  
Sung-il Lee ◽  
Hyegsoon An ◽  
Jeonghee Kim ◽  
Ji-Won Son ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Hydrogen Production ◽  
Gas Transport ◽  
Solid Oxide ◽  
Hydrogen Electrode
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