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Article

Tuning Cu-Content La1−xSrxNi1−yCuyO3−δ with Strontium Doping as Cobalt-Free Cathode Materials for High-Performance Anode-Supported IT-SOFCs

by
Jakub Lach
1,
Kun Zheng
1,2,*,
Ryszard Kluczowski
3,4,
Anna Niemczyk
4,5,
Hailei Zhao
6,7 and
Min Chen
8
1
Department of Hydrogen Energy, Faculty of Energy and Fuels, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
2
AGH Centre of Energy, AGH University of Science and Technology, ul. Czarnowiejska 36, 30-054 Krakow, Poland
3
Ceramic Department CEREL, Institute of Power Engineering, Techniczna 1, 36-040 Boguchwala, Poland
4
Institute of Power Engineering, Mory 8, 01-330 Warsaw, Poland
5
Center for Hydrogen Technologies (CTH2), Institute of Power Engineering, Augustowka 36, 02-981 Warsaw, Poland
6
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
7
Beijing Key Lab. of New Energy Materials and Technology, Beijing 100083, China
8
School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
*
Author to whom correspondence should be addressed.
Materials 2022, 15(24), 8737; https://doi.org/10.3390/ma15248737
Submission received: 8 November 2022 / Revised: 28 November 2022 / Accepted: 6 December 2022 / Published: 7 December 2022
(This article belongs to the Special Issue Advances in Smart Materials for Energy Storage and Conversion)
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Abstract

Cu-content La1−xSrxNi1−yCuyO3−δ perovskites with A-site strontium doping have been tuned as cobalt-free cathode materials for high-performance anode-supported SOFCs, working at an intermediate-temperature range. All obtained oxides belong to the R-3c trigonal system, and phase transitions from the R-3c space group to a Pm-3m simple perovskite have been observed by HT-XRD studies. The substitution of lanthanum with strontium lowers the phase transition temperature, while increasing the thermal expansion coefficient (TEC) and oxygen non-stoichiometry δ of the studied materials. The thermal expansion is anisotropic, and TEC values are similar to commonly used solid electrolytes (e.g., 14.1 × 10−6 K−1 for La0.95Sr0.05Ni0.5Cu0.5O3−δ). The oxygen content of investigated compounds has been determined as a function of temperature. All studied materials are chemically compatible with GDC-10 but react with LSGM and 8YSZ electrolytes. The anode-supported SOFC with a La0.95Sr0.05Ni0.5Cu0.5O3−δ cathode presents an excellent power density of 445 mW·cm−2 at 650 °C in humidified H2. The results indicate that La1−xSrxNi1−yCuyO3−δ perovskites with strontium doping at the A-site can be qualified as promising cathode candidates for anode-supported SOFCs, yielding promising electrochemical performance in the intermediate-temperature range.
Keywords: cathode materials; Cu-rich perovskites; Sr doping in (LaSr)(NiCu)O3; intermediate-temperature solid oxide fuel cells; anode-supported SOFCs cathode materials; Cu-rich perovskites; Sr doping in (LaSr)(NiCu)O3; intermediate-temperature solid oxide fuel cells; anode-supported SOFCs
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MDPI and ACS Style

Lach, J.; Zheng, K.; Kluczowski, R.; Niemczyk, A.; Zhao, H.; Chen, M. Tuning Cu-Content La1−xSrxNi1−yCuyO3−δ with Strontium Doping as Cobalt-Free Cathode Materials for High-Performance Anode-Supported IT-SOFCs. Materials 2022, 15, 8737. https://doi.org/10.3390/ma15248737

AMA Style

Lach J, Zheng K, Kluczowski R, Niemczyk A, Zhao H, Chen M. Tuning Cu-Content La1−xSrxNi1−yCuyO3−δ with Strontium Doping as Cobalt-Free Cathode Materials for High-Performance Anode-Supported IT-SOFCs. Materials. 2022; 15(24):8737. https://doi.org/10.3390/ma15248737

Chicago/Turabian Style

Lach, Jakub, Kun Zheng, Ryszard Kluczowski, Anna Niemczyk, Hailei Zhao, and Min Chen. 2022. "Tuning Cu-Content La1−xSrxNi1−yCuyO3−δ with Strontium Doping as Cobalt-Free Cathode Materials for High-Performance Anode-Supported IT-SOFCs" Materials 15, no. 24: 8737. https://doi.org/10.3390/ma15248737

APA Style

Lach, J., Zheng, K., Kluczowski, R., Niemczyk, A., Zhao, H., & Chen, M. (2022). Tuning Cu-Content La1−xSrxNi1−yCuyO3−δ with Strontium Doping as Cobalt-Free Cathode Materials for High-Performance Anode-Supported IT-SOFCs. Materials, 15(24), 8737. https://doi.org/10.3390/ma15248737

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