SYNTHESIS OF NaxCo2O4 THERMOELECTRIC OXIDE BY THE POLYMERIZED COMPLEX METHOD AND SPS METHODS

doi:10.1016/B978-008044504-5/50066-0

Novel Materials Processing by Advanced Electromagnetic Energy Sources

Proceedings of the International Symposium on Novel Materials Processing by Advanced Electromagnetic Energy Sources March 19–22, 2004, Osaka, Japan

2005, Pages 317-320

https://doi.org/10.1016/B978-008044504-5/50066-0 Get rights and content

Abstract:

The Na_xCo₂O₄ thermoelectric oxide was synthesized by the polymerized complex (PC) process and SPS method. The effects of the PC and SPS method on the microstructure and thermoelectric properties of the sintered body were investigated. The PC+SPS sample had a quite fine microstructure and high density as compared to the sample prepared by the conventional solid state reaction (SSR) method. However, the crystallographic anisotropy of the sintered body was deteriorated during SPS because of the short sintering time of SPS and partial decomposition of the Na_xCo₂O₄ phase. The power factor of the PC+SPS sample was quite larger than that of the conventional SSR sample.

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