Fabrication and electrical characterization of several YSZ tapes for SOFC applications

被引：20

作者：

Fernandez-Gonzalez, R. ^{[1
,2
]}

Molina, T. ^{[3
]}

Savvin, S. ^{[1
]}

Moren, R. ^{[3
]}

Makradi, A. ^{[2
]}

Nunez, P. ^{[1
]}

机构：

[1] Univ La Laguna, Dept Quim Inorgan, Tenerife 38200, Spain

[2] Ctr Rech Publ Henri Tudor, L-1855 Luxembourg, Luxembourg

[3] ICV CSIC, Inst Ceram & Vidrio, Madrid 28049, Spain

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期

关键词：

Tape casting; Rheological properties; Surface behavior in water; YSZ; Solid electrolyte; OXIDE FUEL-CELLS; MICROSTRUCTURE; BEHAVIOR; ELECTROLYTE; DENSITY; POWDERS; FILMS;

D O I：

10.1016/j.ceramint.2014.06.015

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Y2O3 stabilized zirconia (YSZ) is frequently used as an electrolyte in solid oxide fuel cells (SOFC). Tape-casting is a readily available and easy-to-use option for obtaining thin, ceramic films with high relative density. In order to obtain fluid slips, rheological studies of aqueous suspensions of three different commercial YSZ powders dispersed with a polyacrylic acid-based dispersant agent have been performed. Their viscosity was optimized by controlling the dispersant concentration, pH and homogenization time using an ultrasound probe. An electrical study of the sintered tapes prepared under strict control of the rheology was done by electrochemical impedance spectroscopy. Their conductivity is compared to that obtained for non-optimized tapes, showing not big differences after the colloidal processing. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：14253 / 14259

页数：7

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