TY - JOUR
T1 - Estimation of theoretical oxygen permeation rate through La(Sr)Ga(Fe)O 3 mixed conductor
AU - Ishihara, Tatsumi
AU - Ishikawa, Shinji
AU - Furuno, Tetsuro
AU - Yu, Chunying
AU - Ando, Masaki
AU - Nishiguchi, Hiroyasu
AU - Takita, Yusaku
N1 - Funding Information:
The authors acknowledges the financial support from Grant-in-Aid for Science Promotion from Ministry of Education, Culture, Sports, Science, and Technology of Japan (No. 13355032).
PY - 2004/11/30
Y1 - 2004/11/30
N2 - Partial electronic and oxide ion conductivity in La0.7Sr 0.3Ga0.6Fe0.4O3 (LSGF) was investigated in this study by the ion blocking method. It was seen that LSGF stably exhibits the electronic hole conduction over wide oxygen partial pressure. The estimated oxide ion conductivity decreased with decreasing P O2 and this seem to be caused by decreasing amount of VO which is balanced with Fe valence number. The estimated transport number of oxide ion is reasonably agreed with those estimated by oxygen concentration cell. It was found that the theoretical oxygen permeation rate in LSGF is much larger than that of observed value. Therefore, it is expected that the oxygen permeation rate could be improved by increasing activity of surface catalyst.
AB - Partial electronic and oxide ion conductivity in La0.7Sr 0.3Ga0.6Fe0.4O3 (LSGF) was investigated in this study by the ion blocking method. It was seen that LSGF stably exhibits the electronic hole conduction over wide oxygen partial pressure. The estimated oxide ion conductivity decreased with decreasing P O2 and this seem to be caused by decreasing amount of VO which is balanced with Fe valence number. The estimated transport number of oxide ion is reasonably agreed with those estimated by oxygen concentration cell. It was found that the theoretical oxygen permeation rate in LSGF is much larger than that of observed value. Therefore, it is expected that the oxygen permeation rate could be improved by increasing activity of surface catalyst.
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U2 - 10.1016/j.ssi.2004.03.033
DO - 10.1016/j.ssi.2004.03.033
M3 - Conference article
AN - SCOPUS:10044268707
SN - 0167-2738
VL - 175
SP - 367
EP - 370
JO - Solid State Ionics
JF - Solid State Ionics
IS - 1-4
T2 - Fourteenth International Conference on Solid State Ionics
Y2 - 22 June 2003 through 27 June 2003
ER -