High-Thermal-Stability and High-Thermal-Conductivity Ti3C2Tx MXene/Poly(vinyl alcohol) (PVA) Composites

被引：365

作者：

Liu, Rui ^{[1
]}

Li, Weihua ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Coll Chem Engn & Technol, Tangjia Bay 519082, Zhuhai, Peoples R China

来源：

ACS OMEGA | 2018年 / 3卷 / 03期

关键词：

2-DIMENSIONAL TITANIUM CARBIDE; MXENE; GRAPHENE; EXFOLIATION;

D O I：

10.1021/acsomega.7b02001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

MXenes, a new family of two-dimensional materials, have recently attracted increasing attention due to their unique properties for a wide range of potential applications. Herein, we synthesize Ti3C2Tx/poly(vinyl alcohol) (PVA) composites and investigate the effects of the thermal properties of MXene by temperature-dependent Raman spectroscopy and polarized-laser power-dependent Raman spectroscopy. Compared to the Ti3C2Tx MXene, the PVA significantly improves the thermal stability of Ti3C2Tx by reducing the thermal coefficient of the E-g(1) mode from -0.06271 to -0.03357 cm(-1)/K, which is attributed to the strong Ti-O bonds formed between the MXene and PVA polymer confirmed by the X-ray photoelectron spectroscopy results. Meanwhile, the thermal conductivities of Ti3C2Tx and Ti3C2Tx/PVA composites reach as high as about 55.8 and 47.6 W/(m K), respectively. Overall, this work will contribute to extend the MXene applications in terms of polymer-based nanocomposites and improve the reliability of the related devices effectively.

引用

页码：2609 / 2617

页数：9

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