Electrical properties of transition-metal-doped YSZ

Tatsuya Kawada; N. Sakai; H. Yokokawa; M. Dokiya

doi:10.1016/0167-2738(92)90409-I

Electrical properties of transition-metal-doped YSZ

Tatsuya Kawada, N. Sakai, H. Yokokawa, M. Dokiya

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

125 Citations (Scopus)

Abstract

The electrical properties of Mn-doped YSZ (yttria stabilized zirconia) were investigated. The polarization cell was employed to determine the electronic conductivity of Mn 4 mol% doped YSZ (8 mol% Y₂O₃). The observed conductivities were 2.6×10^-4 S cm^-1 in air (p-tyee) and 1×10^-4 S cm^-1 at the oxygen pressure of 10^-14 Pa (n-type). The hole conductivity was hig her than that of Mn-free YSZ by about one order of magnitude. The transference number of oxide ion was higher than 0.99 in the oxygen potential range from 10^-15 to 10⁵ Pa. The ionic conductivity showed oxygen-pressure dependence, which was explained by oxygen-vacancy formation due to the valence change of Mn ion in the YSZ lattice. The electrochemical impedance was studied with Pt electrode on Mn-doped surface of YSZ. It was suggested that the mixed valence state of the Mn ion affected the response of the electrode.

Original language	English
Pages (from-to)	418-425
Number of pages	8
Journal	Solid State Ionics
Volume	53-56
Issue number	PART 1
DOIs	https://doi.org/10.1016/0167-2738(92)90409-I
Publication status	Published - 1992 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/0167-2738(92)90409-I

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title = "Electrical properties of transition-metal-doped YSZ",

abstract = "The electrical properties of Mn-doped YSZ (yttria stabilized zirconia) were investigated. The polarization cell was employed to determine the electronic conductivity of Mn 4 mol% doped YSZ (8 mol% Y2O3). The observed conductivities were 2.6×10-4 S cm-1 in air (p-tyee) and 1×10-4 S cm-1 at the oxygen pressure of 10-14 Pa (n-type). The hole conductivity was hig her than that of Mn-free YSZ by about one order of magnitude. The transference number of oxide ion was higher than 0.99 in the oxygen potential range from 10-15 to 105 Pa. The ionic conductivity showed oxygen-pressure dependence, which was explained by oxygen-vacancy formation due to the valence change of Mn ion in the YSZ lattice. The electrochemical impedance was studied with Pt electrode on Mn-doped surface of YSZ. It was suggested that the mixed valence state of the Mn ion affected the response of the electrode.",

author = "Tatsuya Kawada and N. Sakai and H. Yokokawa and M. Dokiya",

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T1 - Electrical properties of transition-metal-doped YSZ

AU - Kawada, Tatsuya

AU - Sakai, N.

AU - Yokokawa, H.

AU - Dokiya, M.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The electrical properties of Mn-doped YSZ (yttria stabilized zirconia) were investigated. The polarization cell was employed to determine the electronic conductivity of Mn 4 mol% doped YSZ (8 mol% Y2O3). The observed conductivities were 2.6×10-4 S cm-1 in air (p-tyee) and 1×10-4 S cm-1 at the oxygen pressure of 10-14 Pa (n-type). The hole conductivity was hig her than that of Mn-free YSZ by about one order of magnitude. The transference number of oxide ion was higher than 0.99 in the oxygen potential range from 10-15 to 105 Pa. The ionic conductivity showed oxygen-pressure dependence, which was explained by oxygen-vacancy formation due to the valence change of Mn ion in the YSZ lattice. The electrochemical impedance was studied with Pt electrode on Mn-doped surface of YSZ. It was suggested that the mixed valence state of the Mn ion affected the response of the electrode.

AB - The electrical properties of Mn-doped YSZ (yttria stabilized zirconia) were investigated. The polarization cell was employed to determine the electronic conductivity of Mn 4 mol% doped YSZ (8 mol% Y2O3). The observed conductivities were 2.6×10-4 S cm-1 in air (p-tyee) and 1×10-4 S cm-1 at the oxygen pressure of 10-14 Pa (n-type). The hole conductivity was hig her than that of Mn-free YSZ by about one order of magnitude. The transference number of oxide ion was higher than 0.99 in the oxygen potential range from 10-15 to 105 Pa. The ionic conductivity showed oxygen-pressure dependence, which was explained by oxygen-vacancy formation due to the valence change of Mn ion in the YSZ lattice. The electrochemical impedance was studied with Pt electrode on Mn-doped surface of YSZ. It was suggested that the mixed valence state of the Mn ion affected the response of the electrode.

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JO - Solid State Ionics

JF - Solid State Ionics

IS - PART 1

ER -

Electrical properties of transition-metal-doped YSZ

Abstract

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