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Highly Efficient CuCo 2 O 4 Decorated Er 0.4 Bi 1.6 O 3 Nanostructured Cathode for Intermediate Temperature Solid Oxide Fuel Cells
Author(s) -
Kong Yu,
Sun Chengzhi,
Wu Xian,
Zhang Yu,
Zhang Naiqing,
Sun Kening
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901137
Subject(s) - cathode , materials science , sintering , oxide , scandium , electrolyte , composite number , cubic zirconia , electrode , chemical engineering , analytical chemistry (journal) , ceramic , composite material , metallurgy , chemistry , chromatography , engineering
The cathode efficiency for intermediate temperature solid oxide fuel cells is largely limited by the catalytic activity for oxygen reduction reaction. Here by, we design and synthesize CuCo 2 O 4 decorated Er 0.4 Bi 1.6 O 3 cathode by means of a simple gelation method and then screen‐print it on scandium‐stabilized zirconia electrolyte cell followed by a relatively lower temperature sintering process. The decoration of CuCo 2 O 4 adequately enhances the electro‐catalytic activity of the composite cathode for the ORR. In addition, Er 0.4 Bi 1.6 O 3 matrix also reduces the sintering temperature (from 1000 °C to 850 °C) compared to the pristine CuCo 2 O 4 electrode. The CuCo 2 O 4 ‐decorated‐Er 0.4 Bi 1.6 O 3 composite cathode demonstrates a lower polarization resistance (0.016 Ω cm 2 at 800 °C) in air, exhibiting an 87% decrease in comparison to the primary CuCo 2 O 4 cathode.