Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs
Processing and Application of Ceramics, ISSN: 2406-1034, Vol: 16, Issue: 4, Page: 391-401
2022
- 2Citations
- 1Mentions
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New Ceramics Research Has Been Reported by a Researcher at University of Belgrade (Development of a new system of solid ionic conductors based on multi-doped ceria for application in IT-SOFCs)
2023 JAN 05 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- Investigators publish new report on ceramics. According to news
Article Description
Nanosized multi-doped ceria with composition CeNdSmGdDyYO (CNSGDY) as perspective solid ionic conductor was obtained by modified glycine-nitrate procedure (MGNP) and room temperature self-propagating reaction (SPRT). The pressed pellets of both powders were sintered at 1550 °C for 2 h in an air atmosphere. The obtained sintered samples were characterized by XRPD, Raman spectroscopy, FESEM, EDS and EIS methods. Despite a high temperature of sintering, XRPD and FESEM analyses of the samples confirmed appropriate dimensions of grains with fluorite structure. Overall concentration of introduced dopants (x = 0.2) in the structure of CeO after the sintering process was confirmed by EDS analysis. After sintering, Raman spectroscopy confirmed retention of the oxygen vacancies in the ceria lattice, which is in accordance with the improvement of ionic conductivity of solid ionic conductors. The highest value of total conductivity was obtained for the sintered MGNP sample at 700 °C (4.22 × 10 S cm), with the corresponding activation energy of 0.26 eV.
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