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Enhanced thermoelectric properties of NaxCoO2 whisker crystals

G. Peleckis·T. Motohashi·M. Karppinen·H. Yamauchi
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Abstract

Single-crystalline whiskers of thermoelectric cobalt oxide, NaxCoO2, have been grown by an unconventional method from potassium-containing compositions, and their transport properties, and chemical compositions were determined. The growth mechanism was analyzed and interpreted by means of thermogravimetric analysis. At 300 K, electrical resistivity r and thermoelectric power S of the whisker are 102 u ohm cm and 83 uV/K, respectively. The power-factor, S2/r, thus is enhanced up to ~ 68 uW/K2 cm.

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G. Peleckis, T. Motohashi, M. Karppinen, H. Yamauchi. 2003-07-11. Enhanced thermoelectric properties of NaxCoO2 whisker crystals. https://doi.org/10.1063/1.1634371

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