Enhanced Thermoelectric Performance of Nanostructured Bi2Te3 through Significant Phonon Scattering
Article
Article Title | Enhanced Thermoelectric Performance of Nanostructured Bi2Te3 through Significant Phonon Scattering |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Yang, Lei (Author), Chen, Zhi Gang (Author), Hong, Min (Author), Han, Guang (Author) and Zou, Jin (Author) |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 7 (42), pp. 23694-23699 |
Number of Pages | 6 |
Year | 2015 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.5b07596 |
Web Address (URL) | http://pubs.acs.org/doi/10.1021/acsami.5b07596 |
Abstract | N-type Bi2Te3 nanostructures were synthesized using a solvothermal method and in turn sintered using sparking plasma sintering. The sintered n-type Bi2Te3 pellets reserved nanosized grains and showed an ultralow lattice thermal conductivity (0.2 W m-1 K-1), which benefits from high-density small-angle grain boundaries accommodated by dislocations. Such a high phonon scattering leads an enhanced ZT of 0.88 at 400 K. This study provides an efficient method to enhance thermoelectric performance of thermoelectric nanomaterials through nanostructure engineering, making the as-prepared n-type nanostructured Bi2Te3 as a promising candidate for roomerature thermoelectric power generation and Peltier cooling. |
Keywords | Bi2Te3; enhanced thermoelectric properties; low thermal conductivity; nanostructure engineering; lattice thermal conductivity; low thermal conductivity; nanosized grains; Plasma sintering; Small-angle grain boundaries; solvothermal method; thermoelectric performance; thermoelectric properties; thermodynamics; |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4152/enhanced-thermoelectric-performance-of-nanostructured-bi2te3-through-significant-phonon-scattering
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