Influence of ZnO additive on the properties of Y-doped BaSnO3 proton conductor

Yanzhong Wang; Anthony Chesnaud; Emile Bevillon; Jinlong Yang; Guilhem Dezanneau

doi:10.1016/j.mseb.2011.06.009

Influence of ZnO additive on the properties of Y-doped BaSnO₃ proton conductor

Yanzhong Wang, Anthony Chesnaud, Emile Bevillon, Jinlong Yang, Guilhem Dezanneau

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

Abstract

The effects of ZnO additive on the phase formation, microstructure and electrical conduction of Y-doped BaSnO₃ have been investigated. The single-phase and dense BaSn_0.75Y_0.25O_3-δ compound with 4 mol% ZnO additive was successfully prepared after sintering at 1300 °C, which significantly reduces the sintering temperature. The conductivities measured under dry and wet air atmospheres reveal that the bulk conductivity of BaSn_0.71Y_0.25Zn_0.04O _3-δ is much lower than that of BaSn_0.75Y _0.25O_3-δ. However, ZnO as a sintering aid does not affect the bulk conductivity. The total conductivity of BaSn _0.75Y_0.25O_3-δ with ZnO as the sintering aid is slightly higher than that of unmodified BaSn_0.75Y _0.25O_3-δ, and reaches 2.4 × 10^-3 S cm^-1 at 621 °C. Therefore, this material can be used as a proton-conducting electrolyte for intermediate temperature solid oxide fuel cells.

Original language	English
Pages (from-to)	1178-1183
Number of pages	6
Journal	Materials Science and Engineering: B
Volume	176
Issue number	15
DOIs	https://doi.org/10.1016/j.mseb.2011.06.009
Publication status	Published - 15 Sept 2011
Externally published	Yes

Keywords

Electrical conductivity
Fuel cells
Grain boundaries
Sintering

Access to Document

10.1016/j.mseb.2011.06.009

Cite this

@article{34c53a2ac2684a5e97194fdce3592eb5,

title = "Influence of ZnO additive on the properties of Y-doped BaSnO3 proton conductor",

abstract = "The effects of ZnO additive on the phase formation, microstructure and electrical conduction of Y-doped BaSnO3 have been investigated. The single-phase and dense BaSn0.75Y0.25O3-δ compound with 4 mol\% ZnO additive was successfully prepared after sintering at 1300 °C, which significantly reduces the sintering temperature. The conductivities measured under dry and wet air atmospheres reveal that the bulk conductivity of BaSn0.71Y0.25Zn0.04O 3-δ is much lower than that of BaSn0.75Y 0.25O3-δ. However, ZnO as a sintering aid does not affect the bulk conductivity. The total conductivity of BaSn 0.75Y0.25O3-δ with ZnO as the sintering aid is slightly higher than that of unmodified BaSn0.75Y 0.25O3-δ, and reaches 2.4 × 10-3 S cm-1 at 621 °C. Therefore, this material can be used as a proton-conducting electrolyte for intermediate temperature solid oxide fuel cells.",

keywords = "Electrical conductivity, Fuel cells, Grain boundaries, Sintering",

author = "Yanzhong Wang and Anthony Chesnaud and Emile Bevillon and Jinlong Yang and Guilhem Dezanneau",

year = "2011",

month = sep,

day = "15",

doi = "10.1016/j.mseb.2011.06.009",

language = "English",

volume = "176",

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journal = "Materials Science and Engineering: B",

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TY - JOUR

T1 - Influence of ZnO additive on the properties of Y-doped BaSnO3 proton conductor

AU - Wang, Yanzhong

AU - Chesnaud, Anthony

AU - Bevillon, Emile

AU - Yang, Jinlong

AU - Dezanneau, Guilhem

PY - 2011/9/15

Y1 - 2011/9/15

N2 - The effects of ZnO additive on the phase formation, microstructure and electrical conduction of Y-doped BaSnO3 have been investigated. The single-phase and dense BaSn0.75Y0.25O3-δ compound with 4 mol% ZnO additive was successfully prepared after sintering at 1300 °C, which significantly reduces the sintering temperature. The conductivities measured under dry and wet air atmospheres reveal that the bulk conductivity of BaSn0.71Y0.25Zn0.04O 3-δ is much lower than that of BaSn0.75Y 0.25O3-δ. However, ZnO as a sintering aid does not affect the bulk conductivity. The total conductivity of BaSn 0.75Y0.25O3-δ with ZnO as the sintering aid is slightly higher than that of unmodified BaSn0.75Y 0.25O3-δ, and reaches 2.4 × 10-3 S cm-1 at 621 °C. Therefore, this material can be used as a proton-conducting electrolyte for intermediate temperature solid oxide fuel cells.

AB - The effects of ZnO additive on the phase formation, microstructure and electrical conduction of Y-doped BaSnO3 have been investigated. The single-phase and dense BaSn0.75Y0.25O3-δ compound with 4 mol% ZnO additive was successfully prepared after sintering at 1300 °C, which significantly reduces the sintering temperature. The conductivities measured under dry and wet air atmospheres reveal that the bulk conductivity of BaSn0.71Y0.25Zn0.04O 3-δ is much lower than that of BaSn0.75Y 0.25O3-δ. However, ZnO as a sintering aid does not affect the bulk conductivity. The total conductivity of BaSn 0.75Y0.25O3-δ with ZnO as the sintering aid is slightly higher than that of unmodified BaSn0.75Y 0.25O3-δ, and reaches 2.4 × 10-3 S cm-1 at 621 °C. Therefore, this material can be used as a proton-conducting electrolyte for intermediate temperature solid oxide fuel cells.

KW - Electrical conductivity

KW - Fuel cells

KW - Grain boundaries

KW - Sintering

U2 - 10.1016/j.mseb.2011.06.009

DO - 10.1016/j.mseb.2011.06.009

M3 - Article

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JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

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