无机化学学报

Ag复合(Ca_0.9Yb_0.1)₃Co₄O₉陶瓷的制备及其热电性能

Preparation and Thermoelectic Properties of (Ca_0.9Yb_0.1)₃Co₄O₉/Ag Ceramic Composites

作者	单位
卢　艳	哈尔滨工业大学化工学院，哈尔滨 150001
宋　英	哈尔滨工业大学化工学院，哈尔滨 150001
孙　秋	哈尔滨工业大学化工学院，哈尔滨 150001
王福平	哈尔滨工业大学化工学院，哈尔滨 150001

摘要:

关键词: Ca₃Co₄O₉ Yb掺杂 Ag复合热电性能

基金项目:

Abstract: (Ca_0.9Yb_0.1)₃Co₄O₉/Ag polycrystalline samples were prepared by a polyacrylamide gel method followed by a Spark Plasma Sintering(SPS) technique. Thermoelectic properties of (Ca_0.9Yb_0.1)₃Co₄O₉/Ag ceramics were studied at room temperature. The results indicate that Ag particles are dispersed in the Ca₃Co₄O₉ matrix as the second phase. The Ag particles with around 0.1 μm are dispersed homogeneously in the Ca₃Co₄O₉ matrix. The relative densities of the SPS samples are all above 99%, and the electrical conductivity increases with the increase of Ag. Though the addition of Ag decreases the Seebeck coefficient, the power factor of Ag composites is improved due to the obvious increase of electrical conductivity.

Keywords: Ca₃Co₄O₉ Yb substituted Ag composite thermoelectric properties

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卢　艳,宋　英,孙　秋,王福平.Ag复合(Ca_0.9Yb_0.1)₃Co₄O₉陶瓷的制备及其热电性能[J].无机化学学报,2009,25(9):1682-1685.

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