RT Journal Article
T1 Microwave synthesis & sintering of Sm and Ca co-doped ceria ceramics
A1 Prado Gonjal, Jesús De La Paz
A1 Heuguet, Romain
A1 Muñoz Gil, Daniel
A1 Rivera Calzada, Alberto Carlos
A1 Marinel, Sylvain
A1 Morán Miguélez, Emilio
A1 Schmidt, Rainer
AB In this work we report on the combined use of microwave (MW) heating sources for the powdersynthesisandthe ceramic sinteringofSmandCaco-doped ceria Ce0.8Sm0.18Ca0.02O1.9 polycrystalline materials for potential application as an electrolyte in intermediatetemperature solid oxide fuel cells (IT-SOFCs). We investigate the crystal structure, ceramic microstructure and the oxygen ion conductivity in detail and compare the latter to conventionally sintered ceramics. MW sintering of ceramic pellets leads to only slightly increased resistivity as compared to conventional sintering, but offers massive energy and time savings for potential industrial production processes. Exceptionally high oxygen ion conductivity without any significant electronic contribution was found in MW synthesized and MW sintered pellets, where the total resistivity, composed of grain boundary and bulk contributions, was found to be in the range of 0.5-1 kohmios at 500  ºC. Sm- and Ca co-doped ceria may be well-suited for electrolyte materials in IT-SOFCs.
PB Elsevier
SN 0360-3199
YR 2015
FD 2015
LK https://hdl.handle.net/20.500.14352/94347
UL https://hdl.handle.net/20.500.14352/94347
LA eng
NO Prado-Gonjal, Jesús, et al. «Microwave Synthesis & Sintering of Sm and Ca Co-Doped Ceria Ceramics». International Journal of Hydrogen Energy, vol. 40, n.o 45, diciembre de 2015, pp. 15640-51. https://doi.org/10.1016/j.ijhydene.2015.07.161.
NO Comunidad de Madrid
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO European Commission
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 7 oct 2024