Ceria co-doping: Synergistic or average effect?
Citation:
Burbano,Mario M., Nadin,Sian S., Marrocchelli,Dario D., Salanne,Mathieu M., Watson,Graeme W. G.W., Ceria co-doping: Synergistic or average effect?, Physical Chemistry Chemical Physics, 16, 18, 2014, 8320-8331Download Item:
Abstract:
Ceria (CeO2) co-doping has been suggested as a means to achieve ionic conductivities that are significantly higher than those in singly doped systems. Rekindled interest in this topic over the last decade has given rise to claims of much improved performance. The present study makes use of computer simulations to investigate the bulk ionic conductivity of rare earth (RE) doped ceria, where RE = Sc, Gd, Sm, Nd and La. The results from the singly doped systems are compared to those from ceria co-doped with Nd/Sm and Sc/La. The pattern that emerges from the conductivity data is consistent with the dominance of local lattice strains from individual defects, rather than the synergistic co-doping effect reported recently, and as a result, no enhancement in the conductivity of co-doped samples is observed.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
2/IA/1414
Science Foundation Ireland (SFI)
08/RFP/MTR1044
Author's Homepage:
http://people.tcd.ie/watsongDescription:
PUBLISHED
Author: WATSON, GRAEME
Type of material:
Journal ArticleCollections
Series/Report no:
Physical Chemistry Chemical Physics16
18
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Ceria (CeO2) co-dopingDOI:
http://dx.doi.org/10.1039/c4cp00856aISSN:
14639076Metadata
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