Effect of Mn-doping on stability of Scandia stabilized zirconia electrolyte under dual atmosphere of solid oxide fuel cells

Katsuhiko Yamaji; Haruo Kishimoto; Manuel E. Brito; Teruhisa Horita; Harumi Yokokawa; Megumi Shimazu; Keiji Yashiro; Tatsuya Kawada; Junichiro Mizusaki

doi:10.1016/j.ssi.2013.05.019

Effect of Mn-doping on stability of Scandia stabilized zirconia electrolyte under dual atmosphere of solid oxide fuel cells

Katsuhiko Yamaji, Haruo Kishimoto, Manuel E. Brito, Teruhisa Horita, Harumi Yokokawa, Megumi Shimazu, Keiji Yashiro, Tatsuya Kawada, Junichiro Mizusaki

ENV - Environmental Studies for Advanced Society

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

9 Citations (Scopus)

Abstract

The effect of Mn-doping on the stability of ScSZ electrolyte under dual atmosphere of solid oxide fuel cells (SOFCs) was investigated in this study. Scandia stabilized zirconia electrolytes with and without 5 mol % MnO ₂ (ScSZ and Mn-ScSZ) were annealed under dual atmosphere of air and 1.2%H₂O-H₂ at T = 1273 K. The surfaces of the ScSZ electrolytes in the air side were not changed after annealing. On the other hand, the surface of the Mn-ScSZ electrolyte in the fuel side was damaged; fine particles were formed on the surface and increased with time. After annealing for 4 weeks, dusting of the electrolyte surface was observed. Mn-doping to ScSZ and annealing under dual atmosphere simulating SOFCs induced the degradation of ScSZ electrolyte.

Original language	English
Pages (from-to)	102-107
Number of pages	6
Journal	Solid State Ionics
Volume	247-248
DOIs	https://doi.org/10.1016/j.ssi.2013.05.019
Publication status	Published - 2013 Jan 1

Keywords

Degradation
Dusting
Electrolyte
Mn-doped Scandia stabilized zirconia
ScSZ
Solid oxide fuel cell (SOFC)

ASJC Scopus subject areas

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

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@article{096fda6d3ecb46cfbb85a73adef6f540,

title = "Effect of Mn-doping on stability of Scandia stabilized zirconia electrolyte under dual atmosphere of solid oxide fuel cells",

abstract = "The effect of Mn-doping on the stability of ScSZ electrolyte under dual atmosphere of solid oxide fuel cells (SOFCs) was investigated in this study. Scandia stabilized zirconia electrolytes with and without 5 mol % MnO 2 (ScSZ and Mn-ScSZ) were annealed under dual atmosphere of air and 1.2%H2O-H2 at T = 1273 K. The surfaces of the ScSZ electrolytes in the air side were not changed after annealing. On the other hand, the surface of the Mn-ScSZ electrolyte in the fuel side was damaged; fine particles were formed on the surface and increased with time. After annealing for 4 weeks, dusting of the electrolyte surface was observed. Mn-doping to ScSZ and annealing under dual atmosphere simulating SOFCs induced the degradation of ScSZ electrolyte.",

keywords = "Degradation, Dusting, Electrolyte, Mn-doped Scandia stabilized zirconia, ScSZ, Solid oxide fuel cell (SOFC)",

author = "Katsuhiko Yamaji and Haruo Kishimoto and Brito, {Manuel E.} and Teruhisa Horita and Harumi Yokokawa and Megumi Shimazu and Keiji Yashiro and Tatsuya Kawada and Junichiro Mizusaki",

year = "2013",

month = jan,

day = "1",

doi = "10.1016/j.ssi.2013.05.019",

language = "English",

volume = "247-248",

pages = "102--107",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

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TY - JOUR

T1 - Effect of Mn-doping on stability of Scandia stabilized zirconia electrolyte under dual atmosphere of solid oxide fuel cells

AU - Yamaji, Katsuhiko

AU - Kishimoto, Haruo

AU - Brito, Manuel E.

AU - Horita, Teruhisa

AU - Yokokawa, Harumi

AU - Shimazu, Megumi

AU - Yashiro, Keiji

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The effect of Mn-doping on the stability of ScSZ electrolyte under dual atmosphere of solid oxide fuel cells (SOFCs) was investigated in this study. Scandia stabilized zirconia electrolytes with and without 5 mol % MnO 2 (ScSZ and Mn-ScSZ) were annealed under dual atmosphere of air and 1.2%H2O-H2 at T = 1273 K. The surfaces of the ScSZ electrolytes in the air side were not changed after annealing. On the other hand, the surface of the Mn-ScSZ electrolyte in the fuel side was damaged; fine particles were formed on the surface and increased with time. After annealing for 4 weeks, dusting of the electrolyte surface was observed. Mn-doping to ScSZ and annealing under dual atmosphere simulating SOFCs induced the degradation of ScSZ electrolyte.

AB - The effect of Mn-doping on the stability of ScSZ electrolyte under dual atmosphere of solid oxide fuel cells (SOFCs) was investigated in this study. Scandia stabilized zirconia electrolytes with and without 5 mol % MnO 2 (ScSZ and Mn-ScSZ) were annealed under dual atmosphere of air and 1.2%H2O-H2 at T = 1273 K. The surfaces of the ScSZ electrolytes in the air side were not changed after annealing. On the other hand, the surface of the Mn-ScSZ electrolyte in the fuel side was damaged; fine particles were formed on the surface and increased with time. After annealing for 4 weeks, dusting of the electrolyte surface was observed. Mn-doping to ScSZ and annealing under dual atmosphere simulating SOFCs induced the degradation of ScSZ electrolyte.

KW - Degradation

KW - Dusting

KW - Electrolyte

KW - Mn-doped Scandia stabilized zirconia

KW - ScSZ

KW - Solid oxide fuel cell (SOFC)

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U2 - 10.1016/j.ssi.2013.05.019

DO - 10.1016/j.ssi.2013.05.019

M3 - Article

AN - SCOPUS:84884900356

SN - 0167-2738

VL - 247-248

SP - 102

EP - 107

JO - Solid State Ionics

JF - Solid State Ionics

ER -

Effect of Mn-doping on stability of Scandia stabilized zirconia electrolyte under dual atmosphere of solid oxide fuel cells

Abstract

Keywords

ASJC Scopus subject areas

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