HERSTELLUNG VON LANGZEITBESTAENDIGEN SAUERSTOFFELEKTRODEN FUER ELEKTROLYSEZELLEN MIT FESTELEKTROLYT.

摘要

The layer, consisting of a mixt of an electron-conductor and a ceramic ion-conductor, is formed by spraying a suspension of the materials on to the electrolyte layer of the cell. Then the electrode material is sprayed on from a suspension and both layers are co-fired, alternatively they can be fired separately, e.g at 1250 deg.C. An alternative deposition method claimed is coating by immersion. The electrode material and electron conducting material may be the same mixed oxide with the general compsn., La(1-x)CaxMn(1+y)O3 or La1-xSrxMn1+yO3 in which x is between 0.2 and 0.6 and y is 0 to 0.1. The ceramic ion-conductor may consists of CeO2, ZrO2 stabilised with MgO, CaO, Y2O or Yb2O3 or other Rare Earth oxides or of a mixture of CeO2 and ZrO2.