Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles

M. F. S. Machado, L. P. R. Moraes, N. K. Monteiro, Vincenzo Esposito, D. Z. de Florio, Debora Marani, F.C. Fonseca

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Gadolinium-doped cerium oxide (GDC) is an attractive ceramic material for solid oxide fuel cells (SOFCs) both as the electrolyte and in composite electrodes operating at low and intermediate temperatures. GDC exhibits high oxygen ion conductivity at a wide range of temperatures and displays a high resistance to carbon deposition when hydrocarbons are used as fuels. However, an inconvenience of ceria-based oxides is the high sintering temperature needed to obtain a fully dense ceramic body. In this study, a green chemistry route for the synthesis of 10 mol% GDC nanoparticles is proposed. The aqueous precipitation method starts from the nitrates of both cerium and gadolinium and uses excess hexamethylenetetramine (HMT) to produce crystalline GDC at 80ºC. Such a low temperature synthesis provides control over particle size and sinterability of the material at low temperatures.
Original languageEnglish
JournalE C S Transactions
Volume78
Issue number1
Pages (from-to)387-394
ISSN1938-5862
DOIs
Publication statusPublished - 2017
Event15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV) - Hollywood, United States
Duration: 23 Jul 201728 Jul 2017
Conference number: 15
http://www.electrochem.org/sofc-xv

Conference

Conference15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)
Number15
CountryUnited States
CityHollywood
Period23/07/201728/07/2017
Internet address

Cite this

Machado, M. F. S., Moraes, L. P. R., Monteiro, N. K., Esposito, V., Florio, D. Z. D., Marani, D., & Fonseca, F. C. (2017). Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles. E C S Transactions, 78(1), 387-394. https://doi.org/10.1149/07801.0387ecst
Machado, M. F. S. ; Moraes, L. P. R. ; Monteiro, N. K. ; Esposito, Vincenzo ; Florio, D. Z. de ; Marani, Debora ; Fonseca, F.C. / Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles. In: E C S Transactions. 2017 ; Vol. 78, No. 1. pp. 387-394.
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title = "Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles",
abstract = "Gadolinium-doped cerium oxide (GDC) is an attractive ceramic material for solid oxide fuel cells (SOFCs) both as the electrolyte and in composite electrodes operating at low and intermediate temperatures. GDC exhibits high oxygen ion conductivity at a wide range of temperatures and displays a high resistance to carbon deposition when hydrocarbons are used as fuels. However, an inconvenience of ceria-based oxides is the high sintering temperature needed to obtain a fully dense ceramic body. In this study, a green chemistry route for the synthesis of 10 mol{\%} GDC nanoparticles is proposed. The aqueous precipitation method starts from the nitrates of both cerium and gadolinium and uses excess hexamethylenetetramine (HMT) to produce crystalline GDC at 80ºC. Such a low temperature synthesis provides control over particle size and sinterability of the material at low temperatures.",
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Machado, MFS, Moraes, LPR, Monteiro, NK, Esposito, V, Florio, DZD, Marani, D & Fonseca, FC 2017, 'Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles', E C S Transactions, vol. 78, no. 1, pp. 387-394. https://doi.org/10.1149/07801.0387ecst

Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles. / Machado, M. F. S. ; Moraes, L. P. R.; Monteiro, N. K. ; Esposito, Vincenzo; Florio, D. Z. de; Marani, Debora; Fonseca, F.C.

In: E C S Transactions, Vol. 78, No. 1, 2017, p. 387-394.

Research output: Contribution to journalConference articleResearchpeer-review

TY - GEN

T1 - Low Temperature Synthesis and Properties of Gadolinium-Doped Cerium Oxide Nanoparticles

AU - Machado, M. F. S.

AU - Moraes, L. P. R.

AU - Monteiro, N. K.

AU - Esposito, Vincenzo

AU - Florio, D. Z. de

AU - Marani, Debora

AU - Fonseca, F.C.

PY - 2017

Y1 - 2017

N2 - Gadolinium-doped cerium oxide (GDC) is an attractive ceramic material for solid oxide fuel cells (SOFCs) both as the electrolyte and in composite electrodes operating at low and intermediate temperatures. GDC exhibits high oxygen ion conductivity at a wide range of temperatures and displays a high resistance to carbon deposition when hydrocarbons are used as fuels. However, an inconvenience of ceria-based oxides is the high sintering temperature needed to obtain a fully dense ceramic body. In this study, a green chemistry route for the synthesis of 10 mol% GDC nanoparticles is proposed. The aqueous precipitation method starts from the nitrates of both cerium and gadolinium and uses excess hexamethylenetetramine (HMT) to produce crystalline GDC at 80ºC. Such a low temperature synthesis provides control over particle size and sinterability of the material at low temperatures.

AB - Gadolinium-doped cerium oxide (GDC) is an attractive ceramic material for solid oxide fuel cells (SOFCs) both as the electrolyte and in composite electrodes operating at low and intermediate temperatures. GDC exhibits high oxygen ion conductivity at a wide range of temperatures and displays a high resistance to carbon deposition when hydrocarbons are used as fuels. However, an inconvenience of ceria-based oxides is the high sintering temperature needed to obtain a fully dense ceramic body. In this study, a green chemistry route for the synthesis of 10 mol% GDC nanoparticles is proposed. The aqueous precipitation method starts from the nitrates of both cerium and gadolinium and uses excess hexamethylenetetramine (HMT) to produce crystalline GDC at 80ºC. Such a low temperature synthesis provides control over particle size and sinterability of the material at low temperatures.

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M3 - Conference article

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