调整原位合成SnSe2/rGO纳米复合材料的电子性质，增强热电性能

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-07-21 DOI:10.1557/s43578-023-01112-8

Hamzullah Khan, Muhammad Siyar, C. Park, Farhan Javaid, M. Umer, Woo-Min Jin, M. Saleem, A. Adnan

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引用次数: 0

摘要

我们报道了SnSe2-rGO复合材料作为热电(TE)材料的潜力以及还原氧化石墨烯(rGO)浓度对其TE性能的影响。采用溶剂热法合成了SnSe2-rGO复合材料，并在823 K氩气条件下烧结。成功地实现了还原氧化石墨烯在SnSe2基体中的原位掺杂。所得复合材料的电导率显著提高，在300 K时电导率峰值为2479 S/m(纯SnSe2 = 750 S/m)。这种增强是由于氧化石墨烯导电片的存在，增加了整体结构的载流子浓度。研究证实，增加还原氧化石墨烯的浓度可以改善块体SnSe2的热电性能，当11.7%的还原氧化石墨烯加入到SnSe2基体中时，在750 K时ZT达到了0.18的峰值。

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Tuning the electronic properties in facile in-situ solution synthesis of SnSe2/rGO nanocomposites with enhanced thermoelectric performance

We report the potential of an SnSe2–rGO composite as a thermoelectric (TE) material and the effect of reduced graphene oxide (rGO) concentration on its TE properties. SnSe2–rGO composites were synthesized via a solvothermal route followed by sintering at 823 K in the presence of argon. The in-situ doping of rGO within the SnSe2 matrix was successfully achieved. The resultant composite showed a significant improvement in electrical conductivity, which displayed a peak value of 2479 S/m (pure SnSe2 = 750 S/m) at 300 K. This enhancement is due to the presence of rGO conductive sheets, which increased the carrier concentration of the overall structure. The investigation confirms that increasing the rGO concentration can improve the thermoelectric properties of bulk SnSe2, where the peak ZT of 0.18 at 750 K was achieved when 11.7% of rGO was added to the SnSe2 matrix.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.