Single-phase ceramics with La1−xSrxGa1−yMgyO3−δ composition from precursors obtained by mechanosynthesis

Electrical and mechanical characterization by instrumented indentation technique of La0.85Sr0.15Ga0.8Mg0.2O3− electrolyte for SOFCs

“…Among these causes, LSGM structures suffer phase transitions, due to very weak distortions the lattice parameters produced by interactions between doping ions and oxygen vacancies 8,11,27 and/or the presence of few amounts of the secondary phases segregate to the grain boundary. 28 In the present work, the total conductivity obtained for the sample sintered at 1350 • C was 0.01 S cm −1 at 800 • C (Fig. 3c).…”

Performance and short-term stability of single-chamber solid oxide fuel cells based on La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte

“…A SDC buffer layer was deposited via screen printing on a side of a pellet. According to previous works [13,14], both pellets with and without a buffer layer were then sintered in air at 1400 C for 5 h. Final disks presented a diameter of 12 mm and a thickness of 200 mm. For anode preparation, an ink was prepared from a powder mixture of NieSDC (70e30 wt.%) and a commercial resin.…”

“…In contrast, the Sr and Mg doped LaGaO 3 materials (La 1Àx Sr x Ga 1Ày Mg y O 3Àd , LSGM) present high oxygen-ion conductivities at intermediate temperatures (>0.1 S cm À1 at 800 C) [10,11], and a wide range of oxygen partial pressures (10 À21 < P(O 2 ) < 0.1) [12,13]. Several works have demonstrated good cell performances using LSGM as electrolyte.…”

Low‐Temperature Preparation of La0.6Sr0.4Fe0.8Co0.2O3–δ Sinterable Nanopowders by the Polymeric Organic Complex Solution Method

“…Therefore, a lower operating temperature becomes necessary to reduce manufacturing costs and to increase their durability. For that purpose new materials are required, i.e., electrolytes with higher conductivity, such as Gd-doped Ceria [10] or La(Sr)Ga(Mg)O 3 [11], and more effective cathode materials with increased electrocatalytic activity, as La 1-x Sr x FeO 3 (LSF). This one has demonstrated higher electrical and ionic conductivity than La 1-x Sr x MnO 3 [12].…”