Oxygen electrode characteristics of Pr2NiO4 + δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3-δ

Justin G. Railsback; Zhan Gao; Scott A. Barnett

doi:10.1016/j.ssi.2015.03.030

Oxygen electrode characteristics of Pr₂NiO_{4 + δ}-infiltrated porous (La_0.9Sr_0.1)(Ga_0.8Mg_0.2)O_3-δ

Justin G. Railsback, Zhan Gao, Scott A. Barnett^*

^*Corresponding author for this work

Materials Science and Engineering

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

33 Scopus citations

Abstract

Pr₂NiO_{4 + δ} was wet infiltrated into porous LSGM scaffolds to form solid oxide cell oxygen electrodes on LSGM-electrolyte symmetrical cells. The minimum calcination temperature required to form this nickelate phase was between 950 °C and 1000 °C. X-ray diffraction measurements of electrodes tested at 650 °C showed little evidence of any phase change, in contrast to 650 °C annealed Pr₂NiO_{4 + δ} powders that decomposed to Pr₄Ni₃O₁₀ and Pr₆O₁₁. Polarization resistance followed an Arrhenius temperature dependence with an activation barrier of 1.40 eV, and a value as low as 0.11 Ω cm² was observed at 650 °C for a Pr₂NiO_{4 + δ} loading of 14 vol.%. The present resistance values appear to be the lowest reported to date for a Ruddlesden-Popper phase electrode, and are competitive with perovskite-structure electrodes. The low resistance, combined with the good stability of infiltrated Pr₂NiO_{4 + δ} and the advantages of being Co- and Sr-free, make this an exciting new contender for intermediate-temperature solid oxide cell applications.

Original language	English (US)
Pages (from-to)	134-139
Number of pages	6
Journal	Solid State Ionics
Volume	274
DOIs	https://doi.org/10.1016/j.ssi.2015.03.030
State	Published - Jun 1 2015

Keywords

Electrolysis
IT-SOFC
KNiF
Nickelate
Ruddlesden-Popper
Solid oxide fuel cell

ASJC Scopus subject areas

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

Access to Document

10.1016/j.ssi.2015.03.030

Cite this

@article{984e120038cd46a8bfaca7c701c07c52,

title = "Oxygen electrode characteristics of Pr2NiO4 + δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3-δ",

abstract = "Pr2NiO4 + δ was wet infiltrated into porous LSGM scaffolds to form solid oxide cell oxygen electrodes on LSGM-electrolyte symmetrical cells. The minimum calcination temperature required to form this nickelate phase was between 950 °C and 1000 °C. X-ray diffraction measurements of electrodes tested at 650 °C showed little evidence of any phase change, in contrast to 650 °C annealed Pr2NiO4 + δ powders that decomposed to Pr4Ni3O10 and Pr6O11. Polarization resistance followed an Arrhenius temperature dependence with an activation barrier of 1.40 eV, and a value as low as 0.11 Ω cm2 was observed at 650 °C for a Pr2NiO4 + δ loading of 14 vol.%. The present resistance values appear to be the lowest reported to date for a Ruddlesden-Popper phase electrode, and are competitive with perovskite-structure electrodes. The low resistance, combined with the good stability of infiltrated Pr2NiO4 + δ and the advantages of being Co- and Sr-free, make this an exciting new contender for intermediate-temperature solid oxide cell applications.",

keywords = "Electrolysis, IT-SOFC, KNiF, Nickelate, Ruddlesden-Popper, Solid oxide fuel cell",

author = "Railsback, {Justin G.} and Zhan Gao and Barnett, {Scott A.}",

note = "Funding Information: The authors gratefully acknowledge the financial support of the U.S. Department of Energy grant number (Grant # DE-FG02-05ER46255 ). This work made use of the J.B. Cohen X-ray Diffraction Facility and the Northwestern University Electron Probe Instrumentation Center (EPIC), supported by the MRSEC program of the National Science Foundation ( DMR-1121262 ) at the Materials Research Center of Northwestern University. Publisher Copyright: {\textcopyright} 2015 Elsevier B. V. All rights reserved.",

year = "2015",

month = jun,

day = "1",

doi = "10.1016/j.ssi.2015.03.030",

language = "English (US)",

volume = "274",

pages = "134--139",

journal = "Solid State Ionics",

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publisher = "Elsevier",

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TY - JOUR

T1 - Oxygen electrode characteristics of Pr2NiO4 + δ-infiltrated porous (La0.9Sr0.1)(Ga0.8Mg0.2)O3-δ

AU - Railsback, Justin G.

AU - Gao, Zhan

AU - Barnett, Scott A.

N1 - Funding Information: The authors gratefully acknowledge the financial support of the U.S. Department of Energy grant number (Grant # DE-FG02-05ER46255 ). This work made use of the J.B. Cohen X-ray Diffraction Facility and the Northwestern University Electron Probe Instrumentation Center (EPIC), supported by the MRSEC program of the National Science Foundation ( DMR-1121262 ) at the Materials Research Center of Northwestern University. Publisher Copyright: © 2015 Elsevier B. V. All rights reserved.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Pr2NiO4 + δ was wet infiltrated into porous LSGM scaffolds to form solid oxide cell oxygen electrodes on LSGM-electrolyte symmetrical cells. The minimum calcination temperature required to form this nickelate phase was between 950 °C and 1000 °C. X-ray diffraction measurements of electrodes tested at 650 °C showed little evidence of any phase change, in contrast to 650 °C annealed Pr2NiO4 + δ powders that decomposed to Pr4Ni3O10 and Pr6O11. Polarization resistance followed an Arrhenius temperature dependence with an activation barrier of 1.40 eV, and a value as low as 0.11 Ω cm2 was observed at 650 °C for a Pr2NiO4 + δ loading of 14 vol.%. The present resistance values appear to be the lowest reported to date for a Ruddlesden-Popper phase electrode, and are competitive with perovskite-structure electrodes. The low resistance, combined with the good stability of infiltrated Pr2NiO4 + δ and the advantages of being Co- and Sr-free, make this an exciting new contender for intermediate-temperature solid oxide cell applications.

AB - Pr2NiO4 + δ was wet infiltrated into porous LSGM scaffolds to form solid oxide cell oxygen electrodes on LSGM-electrolyte symmetrical cells. The minimum calcination temperature required to form this nickelate phase was between 950 °C and 1000 °C. X-ray diffraction measurements of electrodes tested at 650 °C showed little evidence of any phase change, in contrast to 650 °C annealed Pr2NiO4 + δ powders that decomposed to Pr4Ni3O10 and Pr6O11. Polarization resistance followed an Arrhenius temperature dependence with an activation barrier of 1.40 eV, and a value as low as 0.11 Ω cm2 was observed at 650 °C for a Pr2NiO4 + δ loading of 14 vol.%. The present resistance values appear to be the lowest reported to date for a Ruddlesden-Popper phase electrode, and are competitive with perovskite-structure electrodes. The low resistance, combined with the good stability of infiltrated Pr2NiO4 + δ and the advantages of being Co- and Sr-free, make this an exciting new contender for intermediate-temperature solid oxide cell applications.

KW - Electrolysis

KW - IT-SOFC

KW - KNiF

KW - Nickelate

KW - Ruddlesden-Popper

KW - Solid oxide fuel cell

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