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

被引：9

作者：

Yamaji, Katsuhiko ^{[1
]}

Kishimoto, Haruo ^{[1
]}

Brito, Manuel E. ^{[1
]}

Horita, Teruhisa ^{[1
]}

Yokokawa, Harumi ^{[1
]}

Shimazu, Megumi

Yashiro, Keiji ^{[2
]}

Kawada, Tatsuya ^{[2
]}

Mizusaki, Junichiro ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tokyo, Japan

[2] Tohoku Univ, Sendai, Miyagi 980, Japan

来源：

SOLID STATE IONICS | 2013年 / 247卷

关键词：

Mn-doped Scandia stabilized zirconia; ScSZ; Solid oxide fuel cell (SOFC); Electrolyte; Degradation; Dusting; DOPED ZRO2 ELECTROLYTE; ELECTRICAL-CONDUCTIVITY; IONIC-CONDUCTIVITY; CEO2; ELECTROLYTE; PART II; SC2O3; SYSTEM; OPERATION; PHASE;

D O I：

10.1016/j.ssi.2013.05.019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 % MnO2 (ScSZ and Mn-ScSZ) were annealed under dual atmosphere of air and 1.2%H2O-H-2 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. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：102 / 107

页数：6

共 22 条

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