Influence of NaCI on Cathode Performance of Solid Oxide Fuel Cells

Degradation induced by sodium chloride in air was investigated for （La0.8Sr0.2）0.98MnO3（LSM） and Lao.6Sr0.4Coo.2Fe0.sO3（LSCF） cathodes in solid oxide fuel cells（SOFC）. Cell performance was measured by volatilizing NaC1 to be supplied to the cathode at a constant current density of 200 mA/em2 for up...

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Published in高等学校化学研究：英文版 no. 4; pp. 747 - 750
Main Author LIU Run-ru WANG De-jun LENG Jing
Format Journal Article
LanguageEnglish
Published 2013
Subjects
LSM
NaCl溶液
固体氧化物燃料电池
性能退化
正极材料
氯化钠
电池性能
阴极材料
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Summary:Degradation induced by sodium chloride in air was investigated for （La0.8Sr0.2）0.98MnO3（LSM） and Lao.6Sr0.4Coo.2Fe0.sO3（LSCF） cathodes in solid oxide fuel cells（SOFC）. Cell performance was measured by volatilizing NaC1 to be supplied to the cathode at a constant current density of 200 mA/em2 for up to 100 h. At 800℃, an exposure of the cathode to 30 mg/L NaC1 caused negligible degradation of LSM at least for 100 h. Slight change in the composition of the cathode materials was observed which may imply the gradual degradation of cell performance for the long-term. In addition, cell performance degradation was compared between 700℃ and 900℃, being poi- soned by 30 mg/L NaCI. Degradation was negligible for LSM cathode, while LSCF cathode showed slightly poor to-lerance at 700℃ due to the decomposition of the cathode material. Further studies should be done to clarify the long-term influence of NaCI on cathode performance.
Bibliography:22-1183/06
NaC1; Degradation; Cathode; Solid oxide fuel cell（SOFC）
Degradation induced by sodium chloride in air was investigated for （La0.8Sr0.2）0.98MnO3（LSM） and Lao.6Sr0.4Coo.2Fe0.sO3（LSCF） cathodes in solid oxide fuel cells（SOFC）. Cell performance was measured by volatilizing NaC1 to be supplied to the cathode at a constant current density of 200 mA/em2 for up to 100 h. At 800℃, an exposure of the cathode to 30 mg/L NaC1 caused negligible degradation of LSM at least for 100 h. Slight change in the composition of the cathode materials was observed which may imply the gradual degradation of cell performance for the long-term. In addition, cell performance degradation was compared between 700℃ and 900℃, being poi- soned by 30 mg/L NaCI. Degradation was negligible for LSM cathode, while LSCF cathode showed slightly poor to-lerance at 700℃ due to the decomposition of the cathode material. Further studies should be done to clarify the long-term influence of NaCI on cathode performance.
ISSN:1005-9040
2210-3171