Enhanced thermoelectric performance in MXene/SnTe nanocomposites synthesized via a facile one-step solvothermal method

Article

Jiang, Xu-Ping, Tian, Bang-Zhou, Sun, Qiang, Li, Xu-Liang, Chen, Jie, Tang, Jun, Zhang, Ping, Yang, Lei and Chen, Zhi-Gang. 2021. "Enhanced thermoelectric performance in MXene/SnTe nanocomposites synthesized via a facile one-step solvothermal method." Journal of Solid State Chemistry. 304. https://doi.org/10.1016/j.jssc.2021.122605
Article Title

Enhanced thermoelectric performance in MXene/SnTe nanocomposites synthesized via a facile one-step solvothermal method

ERA Journal ID1537
Article CategoryArticle
AuthorsJiang, Xu-Ping, Tian, Bang-Zhou, Sun, Qiang, Li, Xu-Liang, Chen, Jie, Tang, Jun, Zhang, Ping, Yang, Lei and Chen, Zhi-Gang
Journal TitleJournal of Solid State Chemistry
Journal Citation304
Article Number122605
Number of Pages7
Year2021
PublisherAcademic Press
Place of PublicationUnited States
ISSN0022-4596
1095-726X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jssc.2021.122605
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0022459621006502
Abstract

As a promising alternative to the toxic PbTe-based thermoelectric materials, eco-friendly SnTe has attracted considerable attention. Here, we use a facile solvothermal method to in-situ synthesize MXene/SnTe nanocomposites. Comprehensive characterization results indicate that the incorporation of two-dimensional MXene in SnTe matrix can suppress Sn vacancies to result in a reduced carrier concentration and induce abundant MXene/SnTe interfaces, which simultaneously optimizes the electrical and thermal transport properties. As a result, with the optimized MXene content, the maximum figure of merit of ∼0.63 ​at 823 ​K is obtained in SnTe with 0.6 ​wt% MXene, which shows a 60% enhancement compared to pristine SnTe. This work explores a new strategy to introduce two-dimensional MXene into SnTe-based materials with improved thermoelectric properties, which can inspire new pathways into designing and synthesizing high-performance thermoelectric materials.

KeywordsThermoelectric; MXene; SnTe; Nanocomposites; Interface engineering
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400402. Chemical and thermal processes in energy and combustion
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Byline AffiliationsSichuan University, China
University of Queensland
Centre for Future Materials
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