Year: 2006
Type: article
Abstract: We report the measurements of thermopower, electrical resistivity and thermal conductivity in a complex cobalt oxide Li 0.48 Na 0.35 CoO 2 , whose crystal structure can be viewed as an intergrowth of the O3 phase of Li x CoO 2 and the P2 phase of Na y CoO 2 along the c -axis. The compound shows a large room-temperature thermopower of ∼180 µV K −1 , which is substantially higher than those of Li x CoO 2 and Na y CoO 2 . 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 Li x Na y CoO 2 system is a promising candidate for thermoelectric applications.
Institution: Zhejiang University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Award: G6166669669
OpenAlex ID: W1543421427