Rare earth-doped ceria thin films are currently thoroughly studied to be used in miniaturized solid oxide cells, memristive devices and gas sensors. The employment in such different application fields derives from the most remarkable property of this material, namely ionic conductivity, occurring through the mobility of oxygen ions above a...
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2021 (v1)PublicationUploaded on: April 14, 2023
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2021 (v1)Publication
Defect aggregates in doped ceria play a crucial role in blocking the movement of oxygen vacancies and hence in reducing ionic conductivity. Nevertheless, evaluation of their amount and the correlation between domain size and transport properties is still an open issue. Data derived from a high-pressure X-ray diffraction investigation performed...
Uploaded on: April 14, 2023 -
2019 (v1)Publication
Transport and structural properties of heavily doped ceria can reveal subtle details of the interplay between conductivity and defects aggregation in this material, widely studied as solid electrolyte in solid oxide fuel cells. The ionic conductivity of heavily Gd-doped ceria samples (Ce1−xGdxO2−x/2 with x ranging between 0.31 and 0.49) was...
Uploaded on: April 14, 2023 -
2023 (v1)Publication
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Uploaded on: March 7, 2024 -
2021 (v1)Publication
An experimental investigation of the crystallographic, Raman and transport properties of the Ce1−x(Nd0.74Tm0.26)xO2−x/2 (0.1 ≤ x ≤ 0.6) doped ceria system was performed with the aim of setting out correlations between structural features and ionic conductivity of the material. The chosen composition ensures that the average size of the Nd3+ and...
Uploaded on: March 27, 2023 -
2022 (v1)Publication
The structural, microstructural, Raman and ionic conductivity properties of (Gd,Sm)-doped ceria were studied and compared to the ones of similar ceria systems with the aim of deepening the comprehension of the correlations between defect chemistry and movement of oxygen vacancies in such materials, which are ideal candidates as electrolytes in...
Uploaded on: December 2, 2022 -
2024 (v1)Publication
In-house electrospun La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) nanofibers have been tested through synchrotron x-ray diffraction and electrochemical impedance spectroscopy (EIS) in the 823-1173 K range, namely in the operating window of intermediate-temperature solid oxide fuel cells. Identical tests have been carried out on commercial LSCF powders,...
Uploaded on: August 2, 2024 -
2023 (v1)Publication
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Uploaded on: February 6, 2024 -
2023 (v1)Publication
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Uploaded on: February 6, 2024