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曹光旱, Guanghan
J. Phys. D: Appl. Phys. 40 (2007) 2899-2905,-0001,():
-1年11月30日
CaCu3Ti4O12
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曹光旱, Zhi
J. Phys.: Condens. Matter 18 (2006) L379-L384,-0001,():
-1年11月30日
We report the measurements of thermopower, electrical resistivity and thermal conductivity in a complex cobalt oxide Li0.48Na0.35CoO2, whose crystal structure can be viewed as an intergrowth of the O3 phase of LixCoO2 and the P2 phase of NayCoO2 along the c-axis. The compound shows a large roomtemperature thermopower of ∼180 μV K−1, which is substantially higher than those of LixCoO2 and NayCoO2. The figure of merit for the polycrystalline sample increases rapidly with increasing temperature, and achieves nearly 10−4 K−1 at 300 K, suggesting that the LixNayCoO2 system is a promising candidate for thermoelectric applications.
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