Structure and electrical conductivity of BaCe0.85Ln 0.15O3-δ(Ln = Gd, Y, Yb) ceramics

Yi Jing Gu; Zhan Guo Liu; Jia Hu Ouyang; Fu Yao Yan; Yu Zhou

doi:10.1016/j.electacta.2013.05.034

Structure and electrical conductivity of BaCe_0.85Ln _0.15O_3-δ(Ln = Gd, Y, Yb) ceramics

Yi Jing Gu
, Zhan Guo Liu
, Jia Hu Ouyang^*
, Fu Yao Yan
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

80 Scopus citations

Abstract

BaCe_0.85Ln_0.15O_3-δ (Ln = Gd, Y, Yb) ceramics are synthesized by the solid state reaction method. All of BaCe _0.85Ln_0.15O_3-δ ceramics are composed of a single perovskite-type phase. The grain size of BaCe_0.85Ln _0.15O_3-δ (Ln = Gd, Y, Yb) ceramics decreases with decreasing the ionic radius of doped cations. BaCe_0.85Y _0.15O_3-δ ceramic has the highest total conductivity at 1073 K in both 4% H₂O-saturated H₂ and air among three kinds of BaCe_0.85Ln_0.15O_3-δ ceramics. Total conductivities of BaCe_0.85Gd_0.15O _3-δ and BaCe_0.85Y_0.15O _3-δ ceramics exceed 0.01 S cm^-1 in both 4% H ₂O-saturated H₂ and air above 773 K. The pre-exponential factors and activation energies of BaCe_0.85Ln_0.15O _3-δ ceramics are similar both in 4% H₂O-saturated H₂ and in air. The crystal structure, relative density and grain boundary area are the main influencing factors on electrical conductivity of doped barium cerates.

Original language	English
Pages (from-to)	547-553
Number of pages	7
Journal	Electrochimica Acta
Volume	105
DOIs	https://doi.org/10.1016/j.electacta.2013.05.034
State	Published - 2013
Externally published	Yes

Keywords

Barium cerate
Electrical conductivity
Impedance spectroscopy
Proton conduction
Rare earth oxides

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10.1016/j.electacta.2013.05.034

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@article{f45f0e3c1c144285ba03543d925fe00e,

title = "Structure and electrical conductivity of BaCe0.85Ln 0.15O3-δ(Ln = Gd, Y, Yb) ceramics",

abstract = "BaCe0.85Ln0.15O3-δ (Ln = Gd, Y, Yb) ceramics are synthesized by the solid state reaction method. All of BaCe 0.85Ln0.15O3-δ ceramics are composed of a single perovskite-type phase. The grain size of BaCe0.85Ln 0.15O3-δ (Ln = Gd, Y, Yb) ceramics decreases with decreasing the ionic radius of doped cations. BaCe0.85Y 0.15O3-δ ceramic has the highest total conductivity at 1073 K in both 4\% H2O-saturated H2 and air among three kinds of BaCe0.85Ln0.15O3-δ ceramics. Total conductivities of BaCe0.85Gd0.15O 3-δ and BaCe0.85Y0.15O 3-δ ceramics exceed 0.01 S cm-1 in both 4\% H 2O-saturated H2 and air above 773 K. The pre-exponential factors and activation energies of BaCe0.85Ln0.15O 3-δ ceramics are similar both in 4\% H2O-saturated H2 and in air. The crystal structure, relative density and grain boundary area are the main influencing factors on electrical conductivity of doped barium cerates.",

keywords = "Barium cerate, Electrical conductivity, Impedance spectroscopy, Proton conduction, Rare earth oxides",

author = "Gu, \{Yi Jing\} and Liu, \{Zhan Guo\} and Ouyang, \{Jia Hu\} and Yan, \{Fu Yao\} and Yu Zhou",

year = "2013",

doi = "10.1016/j.electacta.2013.05.034",

language = "英语",

volume = "105",

pages = "547--553",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Structure and electrical conductivity of BaCe0.85Ln 0.15O3-δ(Ln = Gd, Y, Yb) ceramics

AU - Gu, Yi Jing

AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Yan, Fu Yao

AU - Zhou, Yu

PY - 2013

Y1 - 2013

N2 - BaCe0.85Ln0.15O3-δ (Ln = Gd, Y, Yb) ceramics are synthesized by the solid state reaction method. All of BaCe 0.85Ln0.15O3-δ ceramics are composed of a single perovskite-type phase. The grain size of BaCe0.85Ln 0.15O3-δ (Ln = Gd, Y, Yb) ceramics decreases with decreasing the ionic radius of doped cations. BaCe0.85Y 0.15O3-δ ceramic has the highest total conductivity at 1073 K in both 4% H2O-saturated H2 and air among three kinds of BaCe0.85Ln0.15O3-δ ceramics. Total conductivities of BaCe0.85Gd0.15O 3-δ and BaCe0.85Y0.15O 3-δ ceramics exceed 0.01 S cm-1 in both 4% H 2O-saturated H2 and air above 773 K. The pre-exponential factors and activation energies of BaCe0.85Ln0.15O 3-δ ceramics are similar both in 4% H2O-saturated H2 and in air. The crystal structure, relative density and grain boundary area are the main influencing factors on electrical conductivity of doped barium cerates.

AB - BaCe0.85Ln0.15O3-δ (Ln = Gd, Y, Yb) ceramics are synthesized by the solid state reaction method. All of BaCe 0.85Ln0.15O3-δ ceramics are composed of a single perovskite-type phase. The grain size of BaCe0.85Ln 0.15O3-δ (Ln = Gd, Y, Yb) ceramics decreases with decreasing the ionic radius of doped cations. BaCe0.85Y 0.15O3-δ ceramic has the highest total conductivity at 1073 K in both 4% H2O-saturated H2 and air among three kinds of BaCe0.85Ln0.15O3-δ ceramics. Total conductivities of BaCe0.85Gd0.15O 3-δ and BaCe0.85Y0.15O 3-δ ceramics exceed 0.01 S cm-1 in both 4% H 2O-saturated H2 and air above 773 K. The pre-exponential factors and activation energies of BaCe0.85Ln0.15O 3-δ ceramics are similar both in 4% H2O-saturated H2 and in air. The crystal structure, relative density and grain boundary area are the main influencing factors on electrical conductivity of doped barium cerates.

KW - Barium cerate

KW - Electrical conductivity

KW - Impedance spectroscopy

KW - Proton conduction

KW - Rare earth oxides

UR - https://www.scopus.com/pages/publications/84878711434

U2 - 10.1016/j.electacta.2013.05.034

DO - 10.1016/j.electacta.2013.05.034

M3 - 文章

AN - SCOPUS:84878711434

SN - 0013-4686

VL - 105

SP - 547

EP - 553

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Structure and electrical conductivity of BaCe_0.85Ln _0.15O_3-δ(Ln = Gd, Y, Yb) ceramics

Abstract

Keywords

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