Performance of YSZ electrolyte layer deposited by atmospheric plasma spraying for cermet-supported tubular SOFC

被引：63

作者：

Li, CJ ^{[1
]}

Li, CX ^{[1
]}

Ning, MJ ^{[1
]}

机构：

[1] Xian Jiaotong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

来源：

VACUUM | 2004年 / 73卷 / 3-4期

关键词：

plasma spraying; yttria-stabilized zirconia (YSZ); solid oxide fuel cell (SOFC); gas permeability; post densification;

D O I：

10.1016/j.vacuum.2003.12.096

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Yttria-stabilized zirconia (YSZ) was deposited by plasma spraying to develop a cost-effective processing method for the fabrication of electrolyte layer in solid oxide fuel cells (SOFCs). A densification process to plasma-sprayed YSZ coating was conducted with the aim of achieving a dense coating of necessary gas-tightness and an improved ionic conductivity. The densification of ZrO2-4.5 mol% Y2O3 electrolyte, which was produced by atmospheric plasma spray, was performed by impregnating yttrium and zirconium nitrate solution into the coating followed by heat-treatment. The results show that the YSZ layer of the gas permeability comparable to that of fully sintered one can be formed through plasma spraying followed by impregnation densification. The test cell yielded an OCV of 1.04V and a maximum output power density of 101 mW/cm(2) at 930degreesC. Those results show that the combination of plasma spraying with post-impregnation is a feasible process to fabricate YSZ electrolyte layer used in SOFC. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：699 / 703

页数：5

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