Microstructure and Thermoelectric Properties of Screen-Printed Thick Films of Misfit-Layered Cobalt Oxides with Ag Addition

被引：12
作者：
Ngo Van Nong [1 ]
Samson, Alfred Junio [1 ]
Pryds, Nini [1 ]
Linderoth, Soren [1 ]
机构：
[1] Tech Univ Denmark, Fuel Cells & Solid State Chem Div, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2012年 / 41卷 / 06期
关键词：
Misfit-layered cobaltite; thermoelectric oxide; power factor; nanoinclusions; PERFORMANCE; CA3CO4O9+DELTA;
D O I：
10.1007/s11664-011-1848-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Thermoelectric properties of thick (similar to 60 m) films prepared by a screen-printing technique using -type misfit-layered cobalt oxide Ca3Co4O9+ with Ag addition have been studied. The screen-printed films were sintered in air at various temperatures ranging from 973 K to 1223 K. After each sintering process, crystal and microstructure analyses were carried out to determine the optimal sintering condition. The results show that the thermoelectric properties of pure Ca3Co4O9+ thick film are comparable to those of cold isostatic pressing (CIP) samples. We found that the maximum power factor was improved by about 67% (to 0.3 mW/m K-2) for film with proper silver (Ag) metallic inclusions as compared with 0.18 mW/m K-2 for pure Ca3Co4O9+ film under the same sintering condition of 1223 K for 2 h in air.
引用
收藏
页码：1280 / 1285
页数：6
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