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High Temperature Electrical Properties of Y Doped Ca3Co409
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[1]LI Hongtao,WANG Biao,ZHI Huibo,et al.High Temperature Electrical Properties of Y Doped Ca3Co409[J].Journal of Zhengzhou University (Engineering Science),2014,35(04):45-47.[doi:10.3969/j.issn.1671-6833.2014.04.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 35卷 Number of periods: 2014 04 Page number: 45-47 Column: Public date: 2014-08-30
Title:
High Temperature Electrical Properties of Y Doped Ca3Co409
Author(s):
LI Hongtao; WANG Biao; ZHI Huibo; etc;
1.Technical Center for industrial Produet and Raw Material inspection and Testing of SHCl0, Shanghai 200135, China; 2.College of Materials Science and Engineering, Donghua University, Shanghai 201620. China
Keywords:
hermoelectrie material;  Ca3Co4O9;  high pressure
CLC:
TN3
DOI:
10.3969/j.issn.1671-6833.2014.04.011
Abstract:
Abstract: Thermoeleetrie materials Ca3Co4O9 doped with Y in the composilion of Y0.2Ca2.8Co4O9 were prepared by sol-gel method combined high - pressure compacting technique followed by pressureless sinteringThe mierostruetures of the oxides were investigated and the eleetrical properies ( including of Seebeck coelfieient and eleetrieal conduetivity) were measured from room temperature to 1000 K. lt was found that highpressure compacling helps to improve the density and texture of Ca3Co4o9 . The eleelrical resistivity deereaseswith an inerease of temperalure, while the Seebeck eoelficient inereases with an inerease of temperature. Themaximum power factor 3.9 pW/emK2 at 973K is obtained for the sample pressed by high pressure.
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