High-performance thermoelectric Cu2Se nanoplates through nanostructure engineering
Article
Article Title | High-performance thermoelectric Cu2Se nanoplates through nanostructure engineering |
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ERA Journal ID | 201288 |
Article Category | Article |
Authors | Yang, Lei (Author), Chen, Zhi-Gang (Author), Han, Guang (Author), Hong, Min (Author), Zou, Yichao (Author) and Zou, Jin (Author) |
Journal Title | Nano Energy |
Journal Citation | 16, pp. 367-374 |
Number of Pages | 8 |
Year | 2015 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 2211-2855 |
2211-3282 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.nanoen.2015.07.012 |
Abstract | As one of promising thermoelectric materials with intrinsic high figure of merit (ZT), Cu<inf>2</inf>Se provides opportunities to tackle the global energy crisis via converting waste heat into electricity. Here, β-phase Cu<inf>2</inf>Se nanostructures were synthesized using a facile and large-scale solvothermal method. After sparking plasma sintering, the resultant Cu<inf>2</inf>Se pellets show outstanding thermoelectric properties with an ultra-low lattice thermal conductivity (as low as 0.2Wm<sup>-1</sup>K<sup>-1</sup>) that resulted in a recorded high ZT of 1.82 at 850K. Through detailed structural investigations, high-densities small-angle grain boundaries with dislocations have been found in sintered Cu<inf>2</inf>Se pellets through nanostructure engineering, which results in additional phonon scattering to reduce the lattice thermal conductivity. This study provides an important approach to enhance thermoelectric performance of potential thermoelectric materials. |
Keywords | thermoelectric; high ZT; copper selenide; nanostructure engineering |
ANZSRC Field of Research 2020 | 401605. Functional materials |
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/q4157/high-performance-thermoelectric-cu2se-nanoplates-through-nanostructure-engineering
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