Enhanced thermoelectric performance of SnSe based composites with carbon black nanoinclusions

分类： 物理学 >> 交叉学科物理及相关领域的科学与技术 提交时间： 2018-03-30

J. C. Li D. Li X. Y. Qin Y. Y. Li J. Zhang

摘要： Recently, single crystalline SnSe and its sodium doped compound were reported to have an ultralow thermal conductivity and high thermoelectric figure of merit. However, the highest high thermoelectric figure of merit for polycrystalline SnSe-based materials is not larger than unity. In this study, we report a high thermoelectric figure of merit 1.21 at 903K along the hot pressing direction for polycrystalline SnSe, realized by incorporating a proper proportion of carbon black as nano-inclusions. The exceptional performance arises from the ultra-high power factor, which comes from a high electrical conductivity and an enhanced Seebeck coefficient through energy-dependent scattering.

同行评议状态:待评议

 点击量 3936  下载量 1752  评论