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Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr)

Research output: Contribution to journalArticlepeer-review

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Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr). / Myung, Jaeha; Shin, Tae Ho; Huang, Xiubing; Carins, George Michael; Irvine, John Thomas Sirr.

In: International Journal of Hydrogen Energy, Vol. 40, No. 35, 21.09.2015, p. 12003-12008.

Research output: Contribution to journalArticlepeer-review

Harvard

Myung, J, Shin, TH, Huang, X, Carins, GM & Irvine, JTS 2015, 'Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr)', International Journal of Hydrogen Energy, vol. 40, no. 35, pp. 12003-12008. https://doi.org/10.1016/j.ijhydene.2015.05.029

APA

Myung, J., Shin, T. H., Huang, X., Carins, G. M., & Irvine, J. T. S. (2015). Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr). International Journal of Hydrogen Energy, 40(35), 12003-12008. https://doi.org/10.1016/j.ijhydene.2015.05.029

Vancouver

Myung J, Shin TH, Huang X, Carins GM, Irvine JTS. Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr). International Journal of Hydrogen Energy. 2015 Sep 21;40(35):12003-12008. https://doi.org/10.1016/j.ijhydene.2015.05.029

Author

Myung, Jaeha ; Shin, Tae Ho ; Huang, Xiubing ; Carins, George Michael ; Irvine, John Thomas Sirr. / Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr). In: International Journal of Hydrogen Energy. 2015 ; Vol. 40, No. 35. pp. 12003-12008.

Bibtex - Download

@article{6def57e1d74549f9ab6f9a9c045b4b40,
title = "Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr)",
abstract = "Various metal oxide materials have been actively investigated to improve energy efficiency as exhaust-catalyst as well as electrodes in electrochemical devices such as fuel cells, ceramic sensors, photo-catalyst etc. Ceria-based materials are of great interest due to their wide applications; such as redox or oxygen storage promoter in automotive catalyst and solid state conductor in fuel cells. Here we report redox and electrical properties for Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr) by X-ray diffraction (XRD) and simultaneous thermo-gravimetric analysis (TGA). Among various system, Ce1-xCuxO2-δ and Ce1-xNixO2-δ indicated relatively reversible redox behavior, although Cu2+ and Ni2+ had limited solid solubility in CeO2. The enhancement of oxygen carrier concentration and electrical conductivity as well as electrochemical activity in the ceria lattice by the introduction of small amounts transition metal cations have been considered in this study. Ce0.7Cu0.3O2-δ showed about 1015 μmol[O2]/g of oxygen storage capacity (OSC) with high redox stability at 700oC. We also demonstrated that Ce0.9Ni0.1O2-δ was used as an anode of the YSZ electrolyte supported SOFC single cell; the maximum power density was 0.15 W/cm2 at 850oC with hydrogen fuel.",
keywords = "Ceria, Redox stability, Electrical conductivity, Oxide anode, Solid oxide fuel cell",
author = "Jaeha Myung and Shin, {Tae Ho} and Xiubing Huang and Carins, {George Michael} and Irvine, {John Thomas Sirr}",
note = "This work was supported by EPSRC (EP/I022570/1, EP/K015540/1, EP/I038950/1, EP/K021036/1). ",
year = "2015",
month = sep,
day = "21",
doi = "10.1016/j.ijhydene.2015.05.029",
language = "English",
volume = "40",
pages = "12003--12008",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",
number = "35",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Enhancement of redox stability and electrical conductivity by doping various metals on ceria, Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr)

AU - Myung, Jaeha

AU - Shin, Tae Ho

AU - Huang, Xiubing

AU - Carins, George Michael

AU - Irvine, John Thomas Sirr

N1 - This work was supported by EPSRC (EP/I022570/1, EP/K015540/1, EP/I038950/1, EP/K021036/1).

PY - 2015/9/21

Y1 - 2015/9/21

N2 - Various metal oxide materials have been actively investigated to improve energy efficiency as exhaust-catalyst as well as electrodes in electrochemical devices such as fuel cells, ceramic sensors, photo-catalyst etc. Ceria-based materials are of great interest due to their wide applications; such as redox or oxygen storage promoter in automotive catalyst and solid state conductor in fuel cells. Here we report redox and electrical properties for Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr) by X-ray diffraction (XRD) and simultaneous thermo-gravimetric analysis (TGA). Among various system, Ce1-xCuxO2-δ and Ce1-xNixO2-δ indicated relatively reversible redox behavior, although Cu2+ and Ni2+ had limited solid solubility in CeO2. The enhancement of oxygen carrier concentration and electrical conductivity as well as electrochemical activity in the ceria lattice by the introduction of small amounts transition metal cations have been considered in this study. Ce0.7Cu0.3O2-δ showed about 1015 μmol[O2]/g of oxygen storage capacity (OSC) with high redox stability at 700oC. We also demonstrated that Ce0.9Ni0.1O2-δ was used as an anode of the YSZ electrolyte supported SOFC single cell; the maximum power density was 0.15 W/cm2 at 850oC with hydrogen fuel.

AB - Various metal oxide materials have been actively investigated to improve energy efficiency as exhaust-catalyst as well as electrodes in electrochemical devices such as fuel cells, ceramic sensors, photo-catalyst etc. Ceria-based materials are of great interest due to their wide applications; such as redox or oxygen storage promoter in automotive catalyst and solid state conductor in fuel cells. Here we report redox and electrical properties for Ce1-xMxO2-δ (M=Ni, Cu, Co, Mn, Ti, Zr) by X-ray diffraction (XRD) and simultaneous thermo-gravimetric analysis (TGA). Among various system, Ce1-xCuxO2-δ and Ce1-xNixO2-δ indicated relatively reversible redox behavior, although Cu2+ and Ni2+ had limited solid solubility in CeO2. The enhancement of oxygen carrier concentration and electrical conductivity as well as electrochemical activity in the ceria lattice by the introduction of small amounts transition metal cations have been considered in this study. Ce0.7Cu0.3O2-δ showed about 1015 μmol[O2]/g of oxygen storage capacity (OSC) with high redox stability at 700oC. We also demonstrated that Ce0.9Ni0.1O2-δ was used as an anode of the YSZ electrolyte supported SOFC single cell; the maximum power density was 0.15 W/cm2 at 850oC with hydrogen fuel.

KW - Ceria

KW - Redox stability

KW - Electrical conductivity

KW - Oxide anode

KW - Solid oxide fuel cell

U2 - 10.1016/j.ijhydene.2015.05.029

DO - 10.1016/j.ijhydene.2015.05.029

M3 - Article

VL - 40

SP - 12003

EP - 12008

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 35

ER -

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