Characterization of phonon thermal transport of Ti3C2TxMXene thin film

Hao Wu; Jiaxin Gu; Zhongcheng Li; Wenxiang Liu; Hua Bao; Huan Lin; Yanan Yue

doi:10.1088/1361-648X/ac4f1c

Characterization of phonon thermal transport of Ti₃C₂T_xMXene thin film

J Phys Condens Matter. 2022 Feb 10;34(15). doi: 10.1088/1361-648X/ac4f1c.

Authors

Hao Wu¹, Jiaxin Gu¹, Zhongcheng Li¹, Wenxiang Liu¹, Hua Bao², Huan Lin³, Yanan Yue^{1

4}

Affiliations

¹ Key Laboratory of Hydraulic Machinery Transients (MOE), School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China.
² University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
³ School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266033, People's Republic of China.
⁴ Department of Mechanical and Manufacturing Engineering, Miami University, Oxford, OH, 45056, United States of America.

PMID: 35179130
DOI: 10.1088/1361-648X/ac4f1c

Abstract

Two-dimensional MXene materials with high electrotonic conductivity, good chemical stability, and unique laminar structure show great potential in the field of electrochemistry. In contrast to the widely concerned electrical properties, studies on the thermal properties of MXene materials are very limited. This paper presents a comprehensive analysis of the thermal properties of Ti₃C₂T_xMXene thin film. Thermal diffusivity and thermal conductivity of Ti₃C₂T_xfilms are characterized by the transient electro-thermal technique. The experimental results show a 16% enhancement in thermal conductivity when the temperature is increased from 307 K to 352 K. The phonon transport contributes substantially to thermal conductivity compared with electron transport. Molecular dynamic simulation is employed to further investigate the role of phonon thermal transport of Ti₃C₂layer. It is found that the combined effect of specific heat capacity, stacking structure and internal stress states is responsible for the thermal transport performance of Ti₃C₂T_xMXene thin film.

Keywords: MXene; temperature dependence; thermal conductivity.