Lanthanum strontium cobalt ferrite

Lanthanum strontium cobalt ferrite (LSCF), also called lanthanum strontium cobaltite ferrite is a specific ceramic oxide derived from lanthanum cobaltite of the ferrite group. It is a phase containing lanthanum(III) oxide, strontium oxide, cobalt oxide and iron oxide with the formula La
_xSr
_1−xCo
_yFe
_1−yO
₃, where 0.1≤x≤0.4 and 0.2≤y≤0.8.^[1]

It is black in color and crystallizes in a distorted hexagonal perovskite structure.^[2] LSCF undergoes phase transformations at various temperatures depending on the composition. This material is a mixed ionic electronic conductor with comparatively high electronic conductivity (200+ S/cm) and good ionic conductivity (0.2 S/cm).^[3] It is typically non-stoichiometric and can be reduced further at high temperature in low oxygen partial pressures or in the presence of a reducing agent such as carbon.^[4]

LSCF is being investigated as a material for intermediate temperature solid oxide fuel cell cathodes and, potentially as a direct carbon fuel cell anode.^[2]

LSCF is also investigated as a membrane material for separation of oxygen from air, for use in e.g. cleaner burning power plants.^[5]

See also

• Lanthanum strontium manganite (LSM)
• Lanthanum strontium ferrite (LSF)
• Lanthanum calcium manganite (LCM)
• Lanthanum strontium chromite (LSC)
• Lanthanum strontium gallate magnesite (LSGM)