| abstract |
The present invention relates to the formula Ln 1- xy My Fe 1-z C z O 3-δ. [Wherein 0.02 ≦ x ≦ 0.05, 0.1 ≦ y ≦ 0.6, 0.1 ≦ z ≦ 0.3, 0 ≦ δ ≦ 0.25, Ln is a lanthanide, M is strontium or calcium and C is cobalt or copper. In particular, the present invention relates to a cathode material for a high temperature fuel cell which is stoichiometrically insufficient. Used in high temperature fuel cells by using a special grain size cathode material and using a special manufacturing method in which a (Ce, Gd) O 3-δ -intermediate layer is advantageously formed between the cathode and the electrolyte Sometimes a cathode is obtained that can already achieve an output greater than 1 w / cm 2 already at 750 ° C. and a cell voltage of 0.7V. |