Improving solid oxide fuel cells with yttria-doped ceria interlayers by atomic layer deposition

被引：40

作者：

Fan, Zeng ^{[1
]}

Chao, Cheng-Chieh ^{[2
]}

Hossein-Babaei, Faraz ^{[1
]}

Prinz, Fritz B. ^{[1
,2
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 29期

关键词：

LOW-TEMPERATURE; STABILIZED ZIRCONIA; PERFORMANCE; ELECTROLYTES;

D O I：

10.1039/c1jm11550b

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 performance of solid oxide fuel cells (SOFCs) was significantly enhanced through surface modification of yttria-stabilized zirconia (YSZ) electrolyte by doped ceria interlayers. Ultra-thin yttria-doped-ceria (YDC) layers were fabricated by atomic layer deposition (ALD). The doping concentrations of Y2O3 were finely tuned by changing the Ce : Y pulsing ratios. YDC layers were inserted between bulk YSZ electrolyte and a porous Pt cathode. The performance of SOFCs with different doping concentrations of YDC interlayers was measured using the linear sweep voltammetry method at operating temperatures between 300 and 500 degrees C. The fuel cell performance was enhanced by a factor of 2-3.6 within the Y2O3 doping range of 12-17 M%. The enhanced performance was attributed to an increased oxide ion incorporation rate at the electrode/electrolyte interface.

引用

页码：10903 / 10906

页数：4

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