Thermoelectric Device of Na(Co, Cu)2O4 and (Ba, Sr)PbO3.

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  • Na(Co, Cu)<sub>2</sub>O<sub>4</sub>と (Ba, Sr)PbO<sub>3</sub>を用いた酸化物熱電変換素子

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Abstract

The thermoelectric device of oxide p-n coupled element of NaCo1.7Cu0.3O4 and Ba0.2Sr0.8PbO3 has been fabricated using direct joining between p-type and n-type. Because of unwanted reaction between the two p- and n-type oxides, the diffusion barrier of Au foil was used and the device was stable and showed no appreciable contact resistance at the junction after the thermal cycle at 1000 K in air. The TE maximum power from the device was 12.5 mW when the temperatures of the hot and cold side of the device were 1045 K and 539 K, respectively. The device showed neither appreciable contact resistance at the junction nor changes in thermopower, after the high-temperature durability test in air.

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