Synthesis and densification of nanometric Ce0.8Sm 0.2O1.9-δ

Vincenzo Esposito; Marco Fronzi; Enrico Traversa

Synthesis and densification of nanometric Ce_0.8Sm _0.2O_1.9-δ

Vincenzo Esposito^*, Marco Fronzi, Enrico Traversa

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

Nanometric 20% molar Sm-doped ceria (SDC20) powders were synthesized by N, N, N', N' Tetramethylethylendiamine (TMEDA) co-precipitation method. SDC20 was sintered in several conditions to control the final microstructure. Fast firing and conventional sintering were performed and LiNO₃ was used as an additive to promote liquid phase sintering of ceria at low temperatures (900-1200°C). Powders and dense pellets were analysed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) measurements were performed on dense pellets in air to estimate the contribution of grain boundary and bulk to the electrical conductivity. Liquid phase sintering produced the densest samples with the highest conductivity.

Original language	English (US)
Title of host publication	Solid-State Ionics-2006
Pages	169-174
Number of pages	6
State	Published - 2007
Externally published	Yes
Event	2006 MRS Fall Meeting - Boston, MA, United States Duration: Nov 27 2006 → Dec 1 2006

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	972
ISSN (Print)	0272-9172

Other

Other	2006 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	11/27/06 → 12/1/06

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
General Materials Science

Cite this

@inproceedings{338a3ba115e84d34b26a88664e3168c9,

title = "Synthesis and densification of nanometric Ce0.8Sm 0.2O1.9-δ",

abstract = "Nanometric 20% molar Sm-doped ceria (SDC20) powders were synthesized by N, N, N', N' Tetramethylethylendiamine (TMEDA) co-precipitation method. SDC20 was sintered in several conditions to control the final microstructure. Fast firing and conventional sintering were performed and LiNO3 was used as an additive to promote liquid phase sintering of ceria at low temperatures (900-1200°C). Powders and dense pellets were analysed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) measurements were performed on dense pellets in air to estimate the contribution of grain boundary and bulk to the electrical conductivity. Liquid phase sintering produced the densest samples with the highest conductivity.",

author = "Vincenzo Esposito and Marco Fronzi and Enrico Traversa",

year = "2007",

language = "English (US)",

isbn = "1558999299",

series = "Materials Research Society Symposium Proceedings",

pages = "169--174",

booktitle = "Solid-State Ionics-2006",

note = "2006 MRS Fall Meeting ; Conference date: 27-11-2006 Through 01-12-2006",

}

TY - GEN

T1 - Synthesis and densification of nanometric Ce0.8Sm 0.2O1.9-δ

AU - Esposito, Vincenzo

AU - Fronzi, Marco

AU - Traversa, Enrico

PY - 2007

Y1 - 2007

N2 - Nanometric 20% molar Sm-doped ceria (SDC20) powders were synthesized by N, N, N', N' Tetramethylethylendiamine (TMEDA) co-precipitation method. SDC20 was sintered in several conditions to control the final microstructure. Fast firing and conventional sintering were performed and LiNO3 was used as an additive to promote liquid phase sintering of ceria at low temperatures (900-1200°C). Powders and dense pellets were analysed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) measurements were performed on dense pellets in air to estimate the contribution of grain boundary and bulk to the electrical conductivity. Liquid phase sintering produced the densest samples with the highest conductivity.

AB - Nanometric 20% molar Sm-doped ceria (SDC20) powders were synthesized by N, N, N', N' Tetramethylethylendiamine (TMEDA) co-precipitation method. SDC20 was sintered in several conditions to control the final microstructure. Fast firing and conventional sintering were performed and LiNO3 was used as an additive to promote liquid phase sintering of ceria at low temperatures (900-1200°C). Powders and dense pellets were analysed using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). Electrochemical impedance spectroscopy (EIS) measurements were performed on dense pellets in air to estimate the contribution of grain boundary and bulk to the electrical conductivity. Liquid phase sintering produced the densest samples with the highest conductivity.

UR - http://www.scopus.com/inward/record.url?scp=34250816789&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:34250816789

SN - 1558999299

SN - 9781558999299

T3 - Materials Research Society Symposium Proceedings

SP - 169

EP - 174

BT - Solid-State Ionics-2006

T2 - 2006 MRS Fall Meeting

Y2 - 27 November 2006 through 1 December 2006

ER -