Research on Properties of Ca-Co-O Thermoelectric Material with Adding Sm

Abstract:

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Ca3Co4O9 and Ca3-xSmxCo4O9 powders were prepared by sol-gel process. The Ca-Co-O thermoelectric material ceramics were prepared. The ceramics materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microstructure and thermoelectric properties of ceramics were researched. The results indicate that the crystal of Ca3-xSmxCo4O9 with Sm adding growth ideally, the material had high density and low pore rate. The Ca3-xSmxCo4O9 ceramics contain directional array plate-shaped grains with layered structure. The thermoelectric properties of Ca3-xSmxCo4O ceramics were excellent. There were high Seebeck coefficient and high electrical conductivity for Ca3-xSmxCo4O9 ceramics. The power factor increased with temperature increasing.

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Periodical:

Edited by:

Rongming Wang, Ying Wu and Xiaofeng Wu

Pages:

260-265

DOI:

10.4028/www.scientific.net/MSF.688.260

Citation:

J. C. Mu et al., "Research on Properties of Ca-Co-O Thermoelectric Material with Adding Sm", Materials Science Forum, Vol. 688, pp. 260-265, 2011

Online since:

June 2011

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$35.00

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