Patent ID: 8343685

Claim:
A composite material suitable for use as an electrode material in a solid oxide cell, said composite material comprising (Gd 1-x Sr x ) 1-s Fe 1-y Co y O 3-δ or (Ln 1-x Sr x ) 1-s Fe 1-y Co y O 3-δ , with s equal to at least 0.05 or larger; x is from 0 to 1; y is from 0 to 1; wherein Ln is a lanthanide element, Sc or Y; said composite material comprising at least two phases which are non-miscible, wherein the first of the at least two phases has a particle size of from 0.5 to 60 μm, and the second of the at least two phases has a particle size of less than 0.5 μm, and wherein a particle of the second phase is located at the surface of a particle of the first phase.