【摘 要】
：
Thermoelectric power generation is based on the Seebeck effect,the phenomenon that an electromotive force(voltage)develops when a material is exposed to a t
【机 构】
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Department of Materials Science and Engineering,Tsinghua University,Beijing,China
【出 处】
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The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
论文部分内容阅读
Thermoelectric power generation is based on the Seebeck effect,the phenomenon that an electromotive force(voltage)develops when a material is exposed to a temperature gradient.When the TE material is integrated in an electric circuit a current flows,thus,resulting in the conversion of heat into electricity.Accordingly,there is a dimensionless thermoelectric figure of merit(ZT)which commands the energy conversion efficiency,and it can be expressed by,where σ is the electrical conductivity,S is the Seebeck coefficient,κ is the thermal conductivity,and T is the absolute temperature.It can be seen that the high ZT should be with high σ,large S and low κ of TE materialis.
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