Fabrication and Thermoelectric Properties of Peovskite-type Thermoelectric Oxide Y0.95R0.05CoO3 (R=Ca, Sr, Ba)

Chin J Mater Res

2012, Vol. 26

Issue (1): 31-36 DOI:

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Fabrication and Thermoelectric Properties of Peovskite-type Thermoelectric Oxide Y_0.95R_0.05CoO₃ (R=Ca, Sr, Ba)

LIU Yi, LI Haijin, ZHANG Qing, LIU Houtong

School of Mathematics and Physics, Anhui University of Technology, Maanshan 243032

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LIU Yi LI Haijin ZHANG Qing LIU Houtong. Fabrication and Thermoelectric Properties of Peovskite-type Thermoelectric Oxide Y_0.95R_0.05CoO₃ (R=Ca, Sr, Ba). Chin J Mater Res, 2012, 26(1): 31-36.

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Abstract The alkaline-earth metal substituted compounds Y_0.95R_0.05CoO₃ (R=Ca, Sr, Ba) were prepared by sol–gel process, and the effect of substituting on its electrical transport and thermoelectric properties were systematically investigated. The results show that with the increase of Ca²⁺、Sr²⁺、Ba²⁺ ionic radius, the electrical resistivity of the Y_0.95R_0.05CoO₃ compounds increases gradually, Seebeck coefficient was improving, and the power factor decreases, in corresponding temperature range. The high-temperature thermoelectric power factor of the YCoO₃ system can be improved effectively by the substitution of Ca²⁺ with smaller radius approaching that of the ion Y³⁺.

Key words: inorganic non-metallic materials thermoelectric materials sol-gel YCoO3

Received: 17 October 2011

ZTFLH:

TB321

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Supported by National Natural Science Foundation of China No.41075027, the Education Office Key Foundation of Anhui No.KJ2011A053, the Education Office Foundation of Anhui No.2008jyxm313, and the Key Lab Fund of Novel Thin Film Solar Cells, CAS, No.KF201101.

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https://www.cjmr.org/EN/ OR https://www.cjmr.org/EN/Y2012/V26/I1/31

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