Cathode Performance Degradation of SOFC from Sodium Chloride

Run Ru Liu; De Jun Wang; Leng Jing; Xin Yu Bai

doi:10.4028/www.scientific.net/AMR.1051.191

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1051Cathode Performance Degradation of SOFC from...

Cathode Performance Degradation of SOFC from Sodium Chloride

Abstract:

Degradation of cathode induced by sodium chloride in air has been investigated for (La_0.8Sr_0.2)_0.98MnO₃ (LSM). Cell performance was measured by volatilizing NaCl into the air supplied to the cathode at a constant current density of 200 mA cm^-2 up to 100 h. At 800 °C, an exposure to 30 ppm NaCl caused negligible degradation of LSM cathode at least for 100 h, yet degradation became obvious with increasing NaCl concentration. Slight change in the composition of the cathode materials was observed which may lead to the gradual degradation of cell performance. In addition, cell performance degradation was compared between 700 °C to 900 °C, being poisoned by 30 ppm NaCl. Degradation was negligible for the LSM cathode, while it showed slightly poor tolerance at 700 °C due to the decomposition of the cathode material. Further study should be done to clarify the long-term influence of NaCl on cathode performance.

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Periodical:

Advanced Materials Research (Volume 1051)

Pages:

191-194

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1051.191

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Online since:

October 2014

Authors:

Run Ru Liu, De Jun Wang, Leng Jing*, Xin Yu Bai

Keywords:

Cathode, Degradation, NaCl, Solid Oxide Fuel Cell (SOFC)

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