Bibliographic Details
| Title: |
Enhanced thermoelectric performance of (Ba,In) double-filled skutterudites via randomly arranged micropores. |
| Authors: |
Jian Yu1, Wen-Yu Zhao1 wyzhao@whut.edu.cn, Ping Wei1, Wan-Ting Zhu1, Hong-Yu Zhou1, Zhi-Yuan Liu1, Ding-Guo Tang1, Bing Lei1, Qing-Jie Zhang1 zhangqj@whut.edu.cn |
| Source: |
Applied Physics Letters. 4/7/2014, Vol. 104 Issue 14, p1-5. 5p. 2 Black and White Photographs, 1 Diagram, 1 Chart, 2 Graphs. |
| Subject Terms: |
*THERMOELECTRIC effects, *SEEBECK coefficient, *ELECTRIC conductivity, *PHONON scattering, *ZINC antimonides, *THERMOELECTRIC materials, *MICROPORES, *SKUTTERUDITE |
| Abstract: |
Porous (Ba,In) double-filled skutterudite materials with pore diameter about 1-4 μm were prepared by the decomposition of metastable ZnSb inclusions induced by the Zn sublimation. Transport measurements revealed that the Seebeck coefficient was increased due to the electron filtering effect induced by nanostructures in the surfaces of pores, the electrical conductivity was almost unchanged because of the percolation effect of conducted network composed of filled skutterudites, and the lattice thermal conductivity was dramatically suppressed due to the enhanced pore-edge boundary scattering of long-wavelength phonons. As a result, a maximum ZT of 1.36 was obtained, increased by 22.5% as compared to that of the bulk material with same chemical composition. This work demonstrates that by introducing porous structures is thought to be an efficient approach to improve the thermoelectric performance of bulk materials. [ABSTRACT FROM AUTHOR] |
|
Copyright of Applied Physics Letters is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Academic Search Complete |
