Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7744377 | Solid State Ionics | 2018 | 6 Pages |
Abstract
Electrochemical properties of the Pr2-xLaxCuO4 (xâ¯=â¯0.05; 0.1; 0.3) (PLCO) oxides in oxygen reduction reaction (ORR) were examined towards their applicability as cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Pr1.95La0.05CuO4 (PLCO0.05) was defined as a favorable basis for the composite cathode material due to its conducting, thermomechanical and electrocatalytic properties. The optimization of the annealing temperature of the PLCO0.05-xGDC composite electrode deposited on GDC solid electrolyte surface had shown that the lowest area specific resistance (ASR) was achieved at 850â¯Â°C. The highest electrochemical activity in ORR was achieved for the composition containing 40â¯wt% GDC in the temperature range of 600-750â¯Â°C. The application of PLCO0.05-40GDC composite cathode instead of pure PLCO0.05 made it possible to reduce ASR up to 10 times at 700â¯Â°C in air (from 0.87â¯Î©Â·cm2 (xâ¯=â¯0â¯wt%) to 0.08â¯Î©Â·cm2 (xâ¯=â¯40â¯wt%)). According to the data obtained, PLCO0.05-40GDC can be considered as a promising cathode material for IT-SOFCs.
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Authors
N.V. Lyskov, L.M. Kolchina, M.Z. Galin, G.N. Mazo,