Mechanical strengthening of Sm-doped CeO2 ceramics by 1 mol% cobalt oxide for solid oxide fuel cell application

Yingchao Dong; Stuart Hampshire; Jian Er Zhou; Xinfa Dong; Bin Lin; Guangyao Meng

doi:10.1016/j.jpowsour.2011.06.012

Mechanical strengthening of Sm-doped CeO₂ ceramics by 1 mol% cobalt oxide for solid oxide fuel cell application

Yingchao Dong^*, Stuart Hampshire, Jian Er Zhou, Xinfa Dong, Bin Lin, Guangyao Meng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Combustion processed nano-sized Ce_0.79Sm_0.20Co _0.01O_2-δ (CSCoO) and Ce_0.80Sm _0.20O_2-δ (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoO sintered at 1100 °C exhibits a biaxial flexural strength of 354 ± 42 MPa which compared with 194 ± 57 MPa for CSO with a similar relative density sintered at 1400 °C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness.

Original language	English (US)
Pages (from-to)	8402-8405
Number of pages	4
Journal	Journal of Power Sources
Volume	196
Issue number	20
DOIs	https://doi.org/10.1016/j.jpowsour.2011.06.012
State	Published - Oct 15 2011
Externally published	Yes

Keywords

CoO co-doping
Mechanical strengthening
SOFC electrolyte
Sm-doped CeO

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2011.06.012

Cite this

@article{88809a5ea83b4cde8ecefdc2aac529dd,

title = "Mechanical strengthening of Sm-doped CeO2 ceramics by 1 mol% cobalt oxide for solid oxide fuel cell application",

abstract = "Combustion processed nano-sized Ce0.79Sm0.20Co 0.01O2-δ (CSCoO) and Ce0.80Sm 0.20O2-δ (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoO sintered at 1100 °C exhibits a biaxial flexural strength of 354 ± 42 MPa which compared with 194 ± 57 MPa for CSO with a similar relative density sintered at 1400 °C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness.",

keywords = "CoO co-doping, Mechanical strengthening, SOFC electrolyte, Sm-doped CeO",

author = "Yingchao Dong and Stuart Hampshire and Zhou, {Jian Er} and Xinfa Dong and Bin Lin and Guangyao Meng",

note = "Funding Information: The authors wish to thank the Irish Research Council for Science, Engineering and Technology through an EMPOWER Post-doctoral Fellowship (YD) and China Post-Doctoral Grant Scheme (contract no. 20100470846) for financial support.",

year = "2011",

month = oct,

day = "15",

doi = "10.1016/j.jpowsour.2011.06.012",

language = "English (US)",

volume = "196",

pages = "8402--8405",

journal = "Journal of Power Sources",

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TY - JOUR

T1 - Mechanical strengthening of Sm-doped CeO2 ceramics by 1 mol% cobalt oxide for solid oxide fuel cell application

AU - Dong, Yingchao

AU - Hampshire, Stuart

AU - Zhou, Jian Er

AU - Dong, Xinfa

AU - Lin, Bin

AU - Meng, Guangyao

N1 - Funding Information: The authors wish to thank the Irish Research Council for Science, Engineering and Technology through an EMPOWER Post-doctoral Fellowship (YD) and China Post-Doctoral Grant Scheme (contract no. 20100470846) for financial support.

PY - 2011/10/15

Y1 - 2011/10/15

N2 - Combustion processed nano-sized Ce0.79Sm0.20Co 0.01O2-δ (CSCoO) and Ce0.80Sm 0.20O2-δ (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoO sintered at 1100 °C exhibits a biaxial flexural strength of 354 ± 42 MPa which compared with 194 ± 57 MPa for CSO with a similar relative density sintered at 1400 °C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness.

AB - Combustion processed nano-sized Ce0.79Sm0.20Co 0.01O2-δ (CSCoO) and Ce0.80Sm 0.20O2-δ (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoO sintered at 1100 °C exhibits a biaxial flexural strength of 354 ± 42 MPa which compared with 194 ± 57 MPa for CSO with a similar relative density sintered at 1400 °C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness.

KW - CoO co-doping

KW - Mechanical strengthening

KW - SOFC electrolyte

KW - Sm-doped CeO

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DO - 10.1016/j.jpowsour.2011.06.012

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SN - 0378-7753

VL - 196

SP - 8402

EP - 8405

JO - Journal of Power Sources

JF - Journal of Power Sources

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ER -