Oxygen Transport Kinetics in Infiltrated SOFCs Cathode by Electrical Conductivity Relaxation Technique

2013 ◽  
Vol 160 (6) ◽  
pp. F554-F559 ◽  
Author(s):  
Yihong Li ◽  
Kirk Gerdes ◽  
Xingbo Liu
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Transport ◽  
Transport Kinetics ◽  
Relaxation Technique ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation

A Study of the Oxygen Transport Kinetics in SrFeO3-x

2002 ◽  
Vol 756 ◽  
Author(s):  
Jiho Yoo ◽  
Allan J. Jacobson
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Transport ◽  
Diffusion Coefficients ◽  
Abrupt Change ◽  
Vacancy Diffusion ◽  
Conductivity Relaxation ◽  
Surface Exchange ◽  
Electrical Conductivity Relaxation ◽  
Oxygen Ion ◽  
Thermodynamic Factors

ABSTRACTExperimental results from electrical conductivity relaxation (ECR) measurements on SrFeO3-x are described. Values of Dchem and kchem were obtained by monitoring the variation of the time dependence of the electrical conductivity after an abrupt change in the oxygen partial pressure. Values for the oxygen ion and vacancy diffusion coefficients were calculated from the measured thermodynamic factors and compared with those of other compositions in the series La1-xSrxFeO3-x. The surface exchange coefficients, kchem and kex were also determined.

Electrical conductivity relaxation of Sr2Fe1.5Mo0.5O6−δ–Sm0.2Ce0.8O1.9dual-phase composites

2014 ◽  
Vol 2 (1) ◽  
pp. 136-143 ◽  
Author(s):  
Yunlong Wang ◽  
Bobing Hu ◽  
Zhuoying Zhu ◽  
Henny J. M. Bouwmeester ◽  
Changrong Xia
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation
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