Effect of chemical redox on Gd-doped ceria mass diffusion

De Wei Ni, D.Z. de Florio, Debora Marani, Andreas Kaiser, V.B. Tinti, Vincenzo Esposito

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The valence and size of cations influence mass diffusion and oxygen defects in ceria. Here we show that reduction of Ce4+ to Ce3+, at high temperatures and low oxygen activity, activates fast diffusion mechanisms which depend on the aliovalent cation concentration. As a result, polycrystalline solid solutions with enhanced electrochemical properties are formed.
Original languageEnglish
JournalJournal of Materials Chemistry A
Volume3
Issue number37
Pages (from-to)18835-18838
Number of pages4
ISSN2050-7488
DOIs
Publication statusPublished - 2015

Cite this

Ni, De Wei ; de Florio, D.Z. ; Marani, Debora ; Kaiser, Andreas ; Tinti, V.B. ; Esposito, Vincenzo. / Effect of chemical redox on Gd-doped ceria mass diffusion. In: Journal of Materials Chemistry A. 2015 ; Vol. 3, No. 37. pp. 18835-18838.
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Effect of chemical redox on Gd-doped ceria mass diffusion. / Ni, De Wei; de Florio, D.Z.; Marani, Debora; Kaiser, Andreas; Tinti, V.B.; Esposito, Vincenzo.

In: Journal of Materials Chemistry A, Vol. 3, No. 37, 2015, p. 18835-18838.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effect of chemical redox on Gd-doped ceria mass diffusion

AU - Ni, De Wei

AU - de Florio, D.Z.

AU - Marani, Debora

AU - Kaiser, Andreas

AU - Tinti, V.B.

AU - Esposito, Vincenzo

PY - 2015

Y1 - 2015

N2 - The valence and size of cations influence mass diffusion and oxygen defects in ceria. Here we show that reduction of Ce4+ to Ce3+, at high temperatures and low oxygen activity, activates fast diffusion mechanisms which depend on the aliovalent cation concentration. As a result, polycrystalline solid solutions with enhanced electrochemical properties are formed.

AB - The valence and size of cations influence mass diffusion and oxygen defects in ceria. Here we show that reduction of Ce4+ to Ce3+, at high temperatures and low oxygen activity, activates fast diffusion mechanisms which depend on the aliovalent cation concentration. As a result, polycrystalline solid solutions with enhanced electrochemical properties are formed.

U2 - 10.1039/c5ta05537g

DO - 10.1039/c5ta05537g

M3 - Journal article

VL - 3

SP - 18835

EP - 18838

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 37

ER -