Localized doping and apparent fast interdiffusion in bulk nanocrystalline ceria and zirconia obtained by Field Assisted Sintering

Tredici, Ilenia G.; Spinolo, G.; Anselmi‐Tamburini, Umberto

doi:10.1016/j.jeurceramsoc.2017.05.011

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…The observed differences between the samples allowed the researchers to conclude that the strategies for GB conductivity improvement should be accompanied by suitable correlation between the macroscale electrochemical behavior with the nanoscale structural/compositional analysis in order to tailor materials with improved performances. Among the strategies adopted to mitigate the GB core positivity, we cite the annealing treatments to increase the concentration of negative acceptor dopant defects in the space charge region , and GB decoration by acceptor dopants; in fact, these attempts and the other similar cases with oxide-ion conductors (e.g., , ) should require suitable investigations in order to monitor the structure and composition of the GBs engineered in this way and their stability in operative conditions.…”

Section: Electrolyte Grain Boundariesmentioning

confidence: 99%

Solid–Solid Interfaces in Protonic Ceramic Devices: A Critical Review

Chiara

Giannici

Pipitone

et al. 2020

ACS Appl. Mater. Interfaces

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The literature concerning protonic ceramic devices is critically reviewed focusing the reader’s attention on the structure, composition, and phenomena taking place at solid–solid interfaces. These interfaces play a crucial role in the overall device performance, and the relevance of understanding the phenomena taking place at the interfaces for the further improvement of electrochemical protonic ceramic devices is therefore stressed. The grain boundaries and heterostructures in electrolytic membranes, the electrode–electrolyte contacts, and the interfaces within composite anode and cathode materials are all considered, with specific concern to advanced techniques of characterization and to computational modeling by ab initio approaches. An outlook about future developments and improvements highlights the necessity of a deeper insight into the advanced analysis of what happens at the solid–solid interfaces and of in situ/operando investigations that are presently sporadic in the literature on protonic ceramic devices.

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