Evaluation of the structure and electrical transport properties of doped CeO2

Hala Talaat Handal; Kalpana Singh; Qin Li; Venkataraman Thangadurai

doi:10.1149/1.3701336

Evaluation of the structure and electrical transport properties of doped CeO₂

Hala Talaat Handal, Kalpana Singh, Qin Li, Venkataraman Thangadurai^*

^*Corresponding author for this work

School of Chemistry

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

Abstract

In this paper, we report the structure, chemical stability and electrical conductivity of Mn, Mo and Y or Sm-codoped CeO₂. Ce _0.9-xY_0.1Mn_xO_2-δ (x = 5-15%) (CYMO) were prepared by solid state reactions and co-precipitation at elevated temperatures. Powder X-ray diffraction patterns showed that the samples prepared through wet chemistry route were single-phase fluorite structure over the entire concentration ranges of Mn. However, Mn₃O₄ was detected in solid state method synthesised CYMO. Among the CYMO investigated in the present work, Ce_0.8Y_0.1Mn_0.1O _2-δ showed the highest total electrical conductivity of 6.1 × 10^-3 Scm^-1 and 1.5 × 10^-2 Scm^-1 at 700°C in air and H₂, respectively. Mo and Y or Sm-codoped CeO₂ were found to be stable in 30 ppm H₂S in H₂ at 600°C for 12 h, and found to form a single-phase solid solution at elevated temperatures with Y-doped ZrO₂ (YSZ) in air.

Original language	English
Title of host publication	Ionic and Mixed Conducting Ceramics 8
Publisher	Electrochemical Society, Inc.
Pages	453-462
Number of pages	10
Edition	1
ISBN (Electronic)	9781607683131
ISBN (Print)	9781566779531
DOIs	https://doi.org/10.1149/1.3701336
Publication status	Published - 2012
Event	Ionic and Mixed Conducting Ceramics 8 - 221st ECS Meeting - Seattle, WA, United States Duration: 6 May 2012 → 10 May 2012

Publication series

Name	ECS Transactions
Number	1
Volume	45
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Conference

Conference	Ionic and Mixed Conducting Ceramics 8 - 221st ECS Meeting
Country/Territory	United States
City	Seattle, WA
Period	6/05/12 → 10/05/12

Access to Document

10.1149/1.3701336

Cite this

@inproceedings{c9af4c2e11c84babb3086266b83a3239,

title = "Evaluation of the structure and electrical transport properties of doped CeO2",

abstract = "In this paper, we report the structure, chemical stability and electrical conductivity of Mn, Mo and Y or Sm-codoped CeO2. Ce 0.9-xY0.1MnxO2-δ (x = 5-15%) (CYMO) were prepared by solid state reactions and co-precipitation at elevated temperatures. Powder X-ray diffraction patterns showed that the samples prepared through wet chemistry route were single-phase fluorite structure over the entire concentration ranges of Mn. However, Mn3O4 was detected in solid state method synthesised CYMO. Among the CYMO investigated in the present work, Ce0.8Y0.1Mn0.1O 2-δ showed the highest total electrical conductivity of 6.1 × 10-3 Scm-1 and 1.5 × 10-2 Scm-1 at 700°C in air and H2, respectively. Mo and Y or Sm-codoped CeO2 were found to be stable in 30 ppm H2S in H2 at 600°C for 12 h, and found to form a single-phase solid solution at elevated temperatures with Y-doped ZrO2 (YSZ) in air.",

author = "Handal, {Hala Talaat} and Kalpana Singh and Qin Li and Venkataraman Thangadurai",

year = "2012",

doi = "10.1149/1.3701336",

language = "English",

isbn = "9781566779531",

series = "ECS Transactions",

publisher = "Electrochemical Society, Inc.",

number = "1",

pages = "453--462",

booktitle = "Ionic and Mixed Conducting Ceramics 8",

address = "United States",

edition = "1",

note = "Ionic and Mixed Conducting Ceramics 8 - 221st ECS Meeting ; Conference date: 06-05-2012 Through 10-05-2012",

}

Handal, HT, Singh, K, Li, Q & Thangadurai, V 2012, Evaluation of the structure and electrical transport properties of doped CeO₂. in Ionic and Mixed Conducting Ceramics 8. 1 edn, ECS Transactions, no. 1, vol. 45, Electrochemical Society, Inc., pp. 453-462, Ionic and Mixed Conducting Ceramics 8 - 221st ECS Meeting, Seattle, WA, United States, 6/05/12. https://doi.org/10.1149/1.3701336

TY - GEN

T1 - Evaluation of the structure and electrical transport properties of doped CeO2

AU - Handal, Hala Talaat

AU - Singh, Kalpana

AU - Li, Qin

AU - Thangadurai, Venkataraman

PY - 2012

Y1 - 2012

N2 - In this paper, we report the structure, chemical stability and electrical conductivity of Mn, Mo and Y or Sm-codoped CeO2. Ce 0.9-xY0.1MnxO2-δ (x = 5-15%) (CYMO) were prepared by solid state reactions and co-precipitation at elevated temperatures. Powder X-ray diffraction patterns showed that the samples prepared through wet chemistry route were single-phase fluorite structure over the entire concentration ranges of Mn. However, Mn3O4 was detected in solid state method synthesised CYMO. Among the CYMO investigated in the present work, Ce0.8Y0.1Mn0.1O 2-δ showed the highest total electrical conductivity of 6.1 × 10-3 Scm-1 and 1.5 × 10-2 Scm-1 at 700°C in air and H2, respectively. Mo and Y or Sm-codoped CeO2 were found to be stable in 30 ppm H2S in H2 at 600°C for 12 h, and found to form a single-phase solid solution at elevated temperatures with Y-doped ZrO2 (YSZ) in air.

AB - In this paper, we report the structure, chemical stability and electrical conductivity of Mn, Mo and Y or Sm-codoped CeO2. Ce 0.9-xY0.1MnxO2-δ (x = 5-15%) (CYMO) were prepared by solid state reactions and co-precipitation at elevated temperatures. Powder X-ray diffraction patterns showed that the samples prepared through wet chemistry route were single-phase fluorite structure over the entire concentration ranges of Mn. However, Mn3O4 was detected in solid state method synthesised CYMO. Among the CYMO investigated in the present work, Ce0.8Y0.1Mn0.1O 2-δ showed the highest total electrical conductivity of 6.1 × 10-3 Scm-1 and 1.5 × 10-2 Scm-1 at 700°C in air and H2, respectively. Mo and Y or Sm-codoped CeO2 were found to be stable in 30 ppm H2S in H2 at 600°C for 12 h, and found to form a single-phase solid solution at elevated temperatures with Y-doped ZrO2 (YSZ) in air.

U2 - 10.1149/1.3701336

DO - 10.1149/1.3701336

M3 - Conference contribution

AN - SCOPUS:84869078032

SN - 9781566779531

T3 - ECS Transactions

SP - 453

EP - 462

BT - Ionic and Mixed Conducting Ceramics 8

PB - Electrochemical Society, Inc.

T2 - Ionic and Mixed Conducting Ceramics 8 - 221st ECS Meeting

Y2 - 6 May 2012 through 10 May 2012

ER -