Long-Term Cr Poisoning Effect on LSCF-GDC Composite Cathodes Sintered at Different Temperatures
Abstract
Here, the impact of sintering temperature on Cr-poisoning of solid oxide fuel cell (SOFC) cathodes was systematically studied. La0.6Sr0.4Fe0.8Co0.2O3-δ - Ce0.9Gd0.1O2-δ symmetric cells were aged at 750°C in synthetic air with the presence of Crofer 22 APU, a common high temperature interconnect, over 200 hours and electrochemical impedance spectroscopy (EIS) was used to determine the degradation process. Both the ohmic resistance (RΩ) and polarization resistance (RP) of LSCF-GDC cells, extracted from EIS spectra, for different sintering temperatures increase as a function of aging time. Furthermore, the Cr-related degradation rate increases with decreased cathode sintering temperature. The polarization resistance of cathode sintered at lower temperature (950°C) increases dramatically while aging with the presence of Cr and also significantly decreases the oxygen partial pressure dependence after aging. The degradation rate shows a positive correlation to the concentration of Cr. The results indicate that decreased sintering temperature increases the total surface area, leading to more available sites for Sr-Cr-O nucleation and thus greater Cr degradation.
- Authors:
-
- Huazhong Univ. of Science and Technology, Wuhan (China). Center for Fuel Cell Innovation, School of Materials Science and Engineering and State Key Lab. of Material Processing and Die & Mould Technology; Univ. of Maryland, College Park, MD (United States). Univ. of Maryland Energy Research Center (UMERC) and Dept. of Materials Science and Engineering
- Univ. of Maryland, College Park, MD (United States). Univ. of Maryland Energy Research Center (UMERC) and Dept. of Materials Science and Engineering
- Huazhong Univ. of Science and Technology, Wuhan (China). Center for Fuel Cell Innovation, School of Materials Science and Engineering and State Key Lab. of Material Processing and Die & Mould Technology
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE); China Scholarship Council; National Natural Science Foundation of China (NSFC); National Science Foundation (NSF)
- OSTI Identifier:
- 1438484
- Grant/Contract Number:
- FE0009084; 51271083; U1134001; DGE 1322106
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Volume: 163; Journal Issue: 9; Journal ID: ISSN 0013-4651
- Publisher:
- The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; cathode degradation; cathode sintering temperature; Chromium poisoning; Solid Oxide Fuel Cell; strontium compounds
Citation Formats
Xiong, Chunyan, Taillon, Joshua A., Pellegrinelli, Christopher, Huang, Yi-Lin, Salamanca-Riba, Lourdes G., Chi, Bo, Jian, Li, Pu, Jian, and Wachsman, Eric D. Long-Term Cr Poisoning Effect on LSCF-GDC Composite Cathodes Sintered at Different Temperatures. United States: N. p., 2016.
Web. doi:10.1149/2.0841609jes.
Xiong, Chunyan, Taillon, Joshua A., Pellegrinelli, Christopher, Huang, Yi-Lin, Salamanca-Riba, Lourdes G., Chi, Bo, Jian, Li, Pu, Jian, & Wachsman, Eric D. Long-Term Cr Poisoning Effect on LSCF-GDC Composite Cathodes Sintered at Different Temperatures. United States. https://doi.org/10.1149/2.0841609jes
Xiong, Chunyan, Taillon, Joshua A., Pellegrinelli, Christopher, Huang, Yi-Lin, Salamanca-Riba, Lourdes G., Chi, Bo, Jian, Li, Pu, Jian, and Wachsman, Eric D. Tue .
"Long-Term Cr Poisoning Effect on LSCF-GDC Composite Cathodes Sintered at Different Temperatures". United States. https://doi.org/10.1149/2.0841609jes. https://www.osti.gov/servlets/purl/1438484.
@article{osti_1438484,
title = {Long-Term Cr Poisoning Effect on LSCF-GDC Composite Cathodes Sintered at Different Temperatures},
author = {Xiong, Chunyan and Taillon, Joshua A. and Pellegrinelli, Christopher and Huang, Yi-Lin and Salamanca-Riba, Lourdes G. and Chi, Bo and Jian, Li and Pu, Jian and Wachsman, Eric D.},
abstractNote = {Here, the impact of sintering temperature on Cr-poisoning of solid oxide fuel cell (SOFC) cathodes was systematically studied. La0.6Sr0.4Fe0.8Co0.2O3-δ - Ce0.9Gd0.1O2-δ symmetric cells were aged at 750°C in synthetic air with the presence of Crofer 22 APU, a common high temperature interconnect, over 200 hours and electrochemical impedance spectroscopy (EIS) was used to determine the degradation process. Both the ohmic resistance (RΩ) and polarization resistance (RP) of LSCF-GDC cells, extracted from EIS spectra, for different sintering temperatures increase as a function of aging time. Furthermore, the Cr-related degradation rate increases with decreased cathode sintering temperature. The polarization resistance of cathode sintered at lower temperature (950°C) increases dramatically while aging with the presence of Cr and also significantly decreases the oxygen partial pressure dependence after aging. The degradation rate shows a positive correlation to the concentration of Cr. The results indicate that decreased sintering temperature increases the total surface area, leading to more available sites for Sr-Cr-O nucleation and thus greater Cr degradation.},
doi = {10.1149/2.0841609jes},
journal = {Journal of the Electrochemical Society},
number = 9,
volume = 163,
place = {United States},
year = {Tue Jul 19 00:00:00 EDT 2016},
month = {Tue Jul 19 00:00:00 EDT 2016}
}
Web of Science
Works referencing / citing this record:
Enhanced electrochemical performance of LSCF cathode through selection of optimum fabrication parameters
journal, September 2017
- Muhammed Ali, S. A.; Anwar, Mustafa; Baharuddin, Nurul Akidah
- Journal of Solid State Electrochemistry, Vol. 22, Issue 1