Modeling of Oxygen Chemical Potential Distribution in Solid Oxide Electrolyzer Cells

2019 ◽  
Vol 166 (16) ◽  
pp. F1275-F1283 ◽  
Author(s):  
Lei Zhang ◽  
Liangzhu Zhu ◽  
Anil V. Virkar
Keyword(s):  
Potential Distribution ◽  
Chemical Potential ◽  
Solid Oxide ◽  
Oxygen Chemical Potential

In Operando Raman Spectroscopy Study on Oxygen Chemical Potential Change in Ni−SDC Cermet Anode for Solid Oxide Fuel Cells

2016 ◽  
Vol 163 (10) ◽  
pp. F1146-F1150
Author(s):  
Toshiaki Matsui ◽  
Kohei Eguchi ◽  
Takeshi Furukawa ◽  
Takeou Okanishi ◽  
Hiroki Muroyama ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Chemical Potential ◽  
Solid Oxide ◽  
Potential Change ◽  
Oxide Fuel ◽  
Spectroscopy Study ◽  
In Operando ◽  
Oxygen Chemical Potential

Void Formation at the Interface of the Duplex Scale Formed on Fe-5Cr Alloy at 773 K

2011 ◽  
Vol 696 ◽  
pp. 34-38 ◽  
Author(s):  
Mitsutoshi Ueda ◽  
Kenichi Kawamura ◽  
Toshio Maruyama
Keyword(s):  
Potential Distribution ◽  
Chemical Potential ◽  
Volume Fraction ◽  
Void Formation ◽  
Low Oxygen ◽  
Duplex Scale ◽  
Calculated Volume ◽  
Oxide Ion ◽  
Oxygen Chemical Potential ◽  
Good Agreement

Void formation in a duplex scale formed on Fe-5Cr alloy at 773 K has been elucidated by oxygen chemical potential distribution, the flux of oxide ion and its divergence. The calculation predicts that voids preferentially form at the interface between inner and outer scales in the low oxygen partial pressure in which the predominant defect of iron is interstitial ion. The flux of oxide ion changes discontinuously at this interface and the divergence of the flux gives voids. Calculated volume fraction of voids at this interface is in good agreement with that has been measured.

Direct Evaluation of Oxygen Chemical Potential Distribution in an SOFC Cathode by In Situ X-Ray Absorption Spectroscopy

2013 ◽  
Vol 57 (1) ◽  
pp. 1925-1932 ◽  
Author(s):  
Y. Fujimaki ◽  
H. Watanabe ◽  
Y. Terada ◽  
T. Nakamura ◽  
K. Yashiro ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Potential Distribution ◽  
Chemical Potential ◽  
Sofc Cathode ◽  
Direct Evaluation ◽  
X Ray ◽  
X Ray Absorption ◽  
Oxygen Chemical Potential
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