Preparation and characterization of strontium and magnesium doped lanthanum gallates as the electrolyte for IT-SOFC

Nanometric La0.9Sr0.1Ga0.8Mg0.2O3−x ceramic prepared by low-pressure reactive spark-plasma-sintering

“…To take advantage of nano effects in LSGM, it is possible that particle size should be lower than the minimum particle size obtained in this work of 9-20 nm, or certain boundaries suitable for such effects were not obtained. If one combines our data with literature [19,[39][40][41] ones for La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3−x sintered ceramic with micrometric particle size up to 10 m and produced by different methods and from different precursors, it can be stated that a larger SEM particle size is improving conductivity. This is due to the decreasing the number of grain boundaries.…”

Performance of strontium- and magnesium-doped lanthanum gallate electrolyte with lanthanum-doped ceria as a buffer layer for IT-SOFCs

“…It has been reported [5] that the reaction occurring at the Ni-based anode|LSGM electrolyte interface during sintering leads to degradation of cell performance, due to the formation of insulating reaction products. The occurrence of the interface reaction has been confirmed in our laboratory [6].…”

“…Ga atomic percentages is used in this symbolic system) showed the highest conductivity at 800 • C. On the other hand, LSGM8080 gave the highest conductivity in our previous data [6]. In that study, however, it has to be noted that the conductivity measurements were made for only four compositions, namely: LSGM9090, LSGM9080, LSGM8090 and LSGM8080…”

Dense La0.9Sr0.1Ga0.8Mg0.2O2.85 electrolyte for IT-SOFC's: Sintering study and electrochemical characterization

“…Many authors have tried to optimize the synthesis conditions of LSGM12 powders in order to achieve low porosity in the final material. However, whatever the synthesis method (solid-state reaction [5][6][7][8], Pechini method [9][10][11], acrylamide polymerisation [12] or glycine nitrate combustion [13,14]), the powders need to be ground before shaping and only a few papers report the grain size distribution [15][16][17][18][19][20][21] after this step.…”