Spray pyrolysis of electrolyte interlayers for vacuum plasma-sprayed SOFC

被引：35

作者：

Stoermer, Andreas O. ^{[1
]}

Rupp, Jennifer L. M.

Gauckler, Ludwig J.

机构：

[1] BMW Grp, Future Powertrain Technol Projects, D-80788 Munich, Germany

[2] ETH, Inst Nonmet Inorgan Mat, Dept Mat, CH-8093 Zurich, Switzerland

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 19-25期

关键词：

SOFC; electrolyte; spray pyrolysis; vacuum plasma spray; thin film; Ceria; OXIDE FUEL-CELLS; DEPOSITION;

D O I：

10.1016/j.ssi.2006.06.033

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 effects of gadolinia-doped ceria (CGO, Ce0.8Gd0.2O1.9-x) and yttria-doped zirconia (8YSZ, Zr0.92Y0.08O2-x) interlayers prepared by spray pyrolysis between vacuum plasma-sprayed 8YSZ electrolytes (8YSZ-VPS) and screen-printed (La0.8Sr0.2)(0.98)MnO3 cathodes (LSM) on the power output of solid oxide fuel cells (SOFC) are investigated. Amorphous thin films are deposited and then converted to nanocrystalline electrolyte-cathode interlayers during the first heat-up cycle of a SOFC to the operating temperature. CGO thin films between the YSZ plasma-sprayed electrolyte and the LSM cathode increased the power output by more than 20% compared to cells without interlayers, whereas YSZ films degraded the power output of cells. It is assumed that CGO improves the charge transfer at the electrolyte-cathode interface and that the CGO layer prevents the formation of undesirable insulation of La-zirconate at the interface 8YSZ/LSM. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2075 / 2079

页数：5

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