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

被引：5

作者：

Lach, Jakub ^{[1
]}

Zheng, Kun ^{[1
,2
]}

Kluczowski, Ryszard ^{[3
,4
]}

Niemczyk, Anna ^{[4
,5
]}

Zhao, Hailei ^{[6
,7
]}

Chen, Min ^{[8
]}

机构：

[1] AGH Univ Sci & Technol, Fac Energy & Fuels, Dept Hydrogen Energy, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[2] AGH Univ Sci & Technol, AGH Ctr Energy, Ul Czarnowiejska 36, PL-30054 Krakow, Poland

[3] Inst Power Engn, Ceram Dept CEREL, Tech 1, PL-36040 Boguchwala, Poland

[4] Inst Power Engn, Mory 8, PL-01330 Warsaw, Poland

[5] Inst Power Engn, Ctr Hydrogen Technol CTH2, Augustowka 36, PL-02981 Warsaw, Poland

[6] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[7] Beijing Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

[8] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

来源：

MATERIALS | 2022年 / 15卷 / 24期

关键词：

cathode materials; Cu-rich perovskites; Sr doping in (LaSr)(NiCu)O-3; intermediate-temperature solid oxide fuel cells; anode-supported SOFCs; OXIDE FUEL-CELLS; LAYERED PEROVSKITE OXIDES; HIGH-PRESSURE SYNTHESIS; CHEMICAL EXPANSION; AIR ELECTRODE; ELECTROCHEMICAL PROPERTIES; OXYGEN-TRANSPORT; PR; CONDUCTIVITY; MECHANISM;

D O I：

10.3390/ma15248737

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cu-content La1-xSrxNi1-yCuyO3-delta 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 delta of the studied materials. The thermal expansion is anisotropic, and TEC values are similar to commonly used solid electrolytes (e.g., 14.1 x 10(-6) K-1 for La0.95Sr0.05Ni0.5Cu0.5O3-delta). 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-delta cathode presents an excellent power density of 445 mW center dot cm(-2) at 650 degrees C in humidified H-2. The results indicate that La1-xSrxNi1-yCuyO3-delta 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.

引用

页数：18