Lanthanum gallate-based cells

Lanthanum gallate-based perovskite oxide is selected as the electrolyte material for high-performance cells. Strontium is used as a dopant to the A site, and magnesium together with cobalt are doped to the B site of the... 

Lanthanum gallate is doped with divalent metal ions, for instance, strontium and magnesium Lai jSrjMgyGai j,03 usually, x and y have values between 1 and 0. Unlike the ceria-based electrolytes, this electrolyte can also be used at low oxygen partial pressures without the menace of developing an electronic conductivity. When in contact with cathodes of the LSM- or LSC type, some diffusion of manganese and cobalt from the cathode into the electrolyte is possible, but this has little effect on the fuel cell s performance. A certain defect of this electrolyte material is its complicated preparation procedure. 

T. Inagaki, F. Nishiwaki, S. Yamasaki, T. Akbay and K. Hosoi, Intermediate Temperature Solid Oxide Fuel Cell based on Lanthanum Gallate Electrolyte,/. Power Sources, 181,274-280(2008). 

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