Synergistical thermal modulation function of 2D Ti3C2 MXene composite nanosheets via interfacial structure modification

Yuxin Ouyang; Lin Qiu; Yangyang Bai; Wei Yu; Yanhui Feng

doi:10.1016/j.isci.2022.104825

Synergistical thermal modulation function of 2D Ti₃C₂ MXene composite nanosheets via interfacial structure modification

iScience. 2022 Jul 31;25(8):104825. doi: 10.1016/j.isci.2022.104825. eCollection 2022 Aug 19.

Authors

Yuxin Ouyang¹, Lin Qiu^{1

2}, Yangyang Bai¹, Wei Yu³, Yanhui Feng^{1

2}

Affiliations

¹ School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
² Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, University of Science and Technology Beijing, Beijing 100083, China.
³ School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China.

Abstract

MXene demonstrates high in-plane thermal transport merit as an emerging two-dimensional material, but its out-of-plane thermal transport did not fully explore. Here Ti₃C₂ MXene nanosheets with either GO or CNF fillers were fabricated by using the vacuum-assisted filtration method. It was found that the addition of GO and CNF enlarged the interlayer spacing of the MXene layers, bringing about the opportunity for changeable spatial configuration of fillers and the thermal regulation function. If the GO nanosheets were interspersed parallel to the MXene layers, strong interference of increasing oxygen-containing functional group suppresses the out-of-plane thermal transport, resulting in the thermal conductivity decreasing from 0.5 W/(m·K) to 0.31 W/(m·K) for 20 wt% GO addition. Moreover, CNFs formed out-of-plane protruding on the surface of MXene nanosheets, resulting in the thermal conductivity increasing to 0.81 W/(m·K) for 20 wt% CNF addition. This discovery navigates how to prepare MXene composites with customized thermal properties.

Keywords: Nanomaterials; thermal engineering; thermal property.