Enhanced thermoelectric performance of Bi2O2Se by MXene addition via liquid assisted shear exfoliation-restacking process

Tao Sun, Chenxi Zhao, Hui Liu, Lin Pan, Changchun Chen, Yifeng Wang

科研成果: 期刊稿件文章同行评审

摘要

In this study, Bi2O2Se-x%MXene (Ti3C2Tx) composite samples were prepared using the liquid assisted shear exfoliation-restacking (LASE-R) method, and their thermoelectric properties were thoroughly examined. The findings indicate that the introduction of MXene effectively boosts the carrier concentration and mobility, thereby enhancing the electrical conductivity of the composite. Notably, the absolute Seebeck coefficient exhibited a distinct trend of increasing initially and then declining with an increase in the MXene composite content, leading to an improved Power Factor (PF). Furthermore, the inclusion of MXene suppressed the thermal conductivity of the composites, attributed to enhanced phonon scattering. Consequently, the Bi2O2Se-2 %MXene composite sample achieved a ZTmax value of 0.58 at 773 K, representing a significant enhancement of 1.66 times compared to the pristine sample.

源语言英语
文章编号177297
期刊Journal of Alloys and Compounds
1010
DOI
出版状态已出版 - 5 1月 2025

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