Visualization of oxide ionic diffusion at SOFC cathode/electrolyte interfaces by isotope labeling techniques

Teruhisa Horita; Mina Nishi; Taro Shimonosono; Haruo Kishimoto; Katsuhiko Yamaji; Manuel E. Brito; Harumi Yokokawa

doi:10.1016/j.ssi.2013.12.039

Visualization of oxide ionic diffusion at SOFC cathode/electrolyte interfaces by isotope labeling techniques

Teruhisa Horita, Mina Nishi, Taro Shimonosono, Haruo Kishimoto, Katsuhiko Yamaji, Manuel E. Brito, Harumi Yokokawa

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

11 Citations (Scopus)

Abstract

The depth profiles of secondary ion mass spectrometry (SIMS) have been applied to analyze the distribution of ¹⁸O and metal oxide ions precisely at La_0.6Sr_0.4Co_0.2Fe _0.8O_{3 - d}/Gd_0.1Ce_0.9O _{2 - x} (GDC)/Y_0.15Zr_0.85O_{2 - y} (YSZ) interfaces. ¹⁸O concentration peak was identified only under cathodic polarization with a constant current density of 0.071 A cm^{- 2} at 973 K under ¹⁸O₂ atmosphere. The ¹⁸O peak position was corresponded to the Sr condensed zone where SrZrO₃ was formed at the GDC/YSZ interfaces. The SrZrO₃ formation and the ¹⁸O concentration profile pile-up are correlated to each other.

Original language	English
Pages (from-to)	398-402
Number of pages	5
Journal	Solid State Ionics
Volume	262
DOIs	https://doi.org/10.1016/j.ssi.2013.12.039
Publication status	Published - 2014 Sept 1
Externally published	Yes

Keywords

Cathode
Depth profiles
Isotope labeling
SIMS
SOFC

ASJC Scopus subject areas

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

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10.1016/j.ssi.2013.12.039

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@article{e7661736995243e780b2fbffc7f62573,

title = "Visualization of oxide ionic diffusion at SOFC cathode/electrolyte interfaces by isotope labeling techniques",

abstract = "The depth profiles of secondary ion mass spectrometry (SIMS) have been applied to analyze the distribution of 18O and metal oxide ions precisely at La0.6Sr0.4Co0.2Fe 0.8O3 - d/Gd0.1Ce0.9O 2 - x (GDC)/Y0.15Zr0.85O2 - y (YSZ) interfaces. 18O concentration peak was identified only under cathodic polarization with a constant current density of 0.071 A cm- 2 at 973 K under 18O2 atmosphere. The 18O peak position was corresponded to the Sr condensed zone where SrZrO3 was formed at the GDC/YSZ interfaces. The SrZrO3 formation and the 18O concentration profile pile-up are correlated to each other.",

keywords = "Cathode, Depth profiles, Isotope labeling, SIMS, SOFC",

author = "Teruhisa Horita and Mina Nishi and Taro Shimonosono and Haruo Kishimoto and Katsuhiko Yamaji and Brito, {Manuel E.} and Harumi Yokokawa",

note = "Funding Information: Part of this study was financially supported by CREST, JST, Japan .",

year = "2014",

month = sep,

day = "1",

doi = "10.1016/j.ssi.2013.12.039",

language = "English",

volume = "262",

pages = "398--402",

journal = "Solid State Ionics",

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publisher = "Elsevier",

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T1 - Visualization of oxide ionic diffusion at SOFC cathode/electrolyte interfaces by isotope labeling techniques

AU - Horita, Teruhisa

AU - Nishi, Mina

AU - Shimonosono, Taro

AU - Kishimoto, Haruo

AU - Yamaji, Katsuhiko

AU - Brito, Manuel E.

AU - Yokokawa, Harumi

N1 - Funding Information: Part of this study was financially supported by CREST, JST, Japan .

PY - 2014/9/1

Y1 - 2014/9/1

N2 - The depth profiles of secondary ion mass spectrometry (SIMS) have been applied to analyze the distribution of 18O and metal oxide ions precisely at La0.6Sr0.4Co0.2Fe 0.8O3 - d/Gd0.1Ce0.9O 2 - x (GDC)/Y0.15Zr0.85O2 - y (YSZ) interfaces. 18O concentration peak was identified only under cathodic polarization with a constant current density of 0.071 A cm- 2 at 973 K under 18O2 atmosphere. The 18O peak position was corresponded to the Sr condensed zone where SrZrO3 was formed at the GDC/YSZ interfaces. The SrZrO3 formation and the 18O concentration profile pile-up are correlated to each other.

AB - The depth profiles of secondary ion mass spectrometry (SIMS) have been applied to analyze the distribution of 18O and metal oxide ions precisely at La0.6Sr0.4Co0.2Fe 0.8O3 - d/Gd0.1Ce0.9O 2 - x (GDC)/Y0.15Zr0.85O2 - y (YSZ) interfaces. 18O concentration peak was identified only under cathodic polarization with a constant current density of 0.071 A cm- 2 at 973 K under 18O2 atmosphere. The 18O peak position was corresponded to the Sr condensed zone where SrZrO3 was formed at the GDC/YSZ interfaces. The SrZrO3 formation and the 18O concentration profile pile-up are correlated to each other.

KW - Cathode

KW - Depth profiles

KW - Isotope labeling

KW - SIMS

KW - SOFC

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U2 - 10.1016/j.ssi.2013.12.039

DO - 10.1016/j.ssi.2013.12.039

M3 - Article

AN - SCOPUS:84903280277

SN - 0167-2738

VL - 262

SP - 398

EP - 402

JO - Solid State Ionics

JF - Solid State Ionics

ER -

Visualization of oxide ionic diffusion at SOFC cathode/electrolyte interfaces by isotope labeling techniques

Abstract

Keywords

ASJC Scopus subject areas

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