CATHODE MATERIAL FOR A HIGH-TEMPERATURE FUEL CELL(SOFC) AND A CATHODE THAT CAN BE PRODUCED THEREFROM

摘要

The invention relates to a cathode material, particularly for use in a high-temperature fuel cell, comprising substoichiometric Ln1-x-y MyFe1-zCzO3-delta, with 0.02 = x = 0.05, 0.1 = y = 0.6, 0.1 = z = 0.3, 0 = delta = 0.25 and with Ln = lanthanides, M = strontium or calcium and C = cobalt or copper. By using a particular production method, in which this cathode material having a specified grain size is used, and in which a (Ce, Gd)O2-delta-intermediate layer is advantageously formed between the cathode and electrolyte, a cathode is obtained that, when used in a high-temperature fuel cell, can achieve a power greater than 1 W/cm2 already at 750 °C and a cell voltage of 0.7 V.