La0.6Sr0.4Co0.2Fe0.8O3-delta oxygen electrodes for solid oxide cells prepared by polymer precursor and nitrates solution infiltration into gadolinium doped ceria backbone

摘要

Infiltration is a method, which can be applied for the electrode preparation. In this paper oxygen electrode is prepared solely by the infiltration of La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) into Ce0.8Gd0.2O2-delta (CGO) backbone. The use a polymer precursor as an infiltrating medium, instead of an aqueous nitrate salts solution is presented. It is shown that the polymer forms the single-phase perovskite at 600 degrees C, contrary to the nitrates solution. As a result, obtained area specific resistance (ASR) is lowered from 0.21 Omega cm(2) to 0.16 Omega cm(2) at 600 degrees C. More than 35% of LSCF in the oxygen electrode decreases the performance. (C) 2017 Elsevier Ltd. All rights reserved.