Volume 21, Issue 12 2411329
Research Article

Tradeoff between Mechanical Strength and Electrical Conductivity of MXene Films by Nacre-Inspired Subtractive Manufacturing

Chao Rong

Chao Rong

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

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Ting Su

Ting Su

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

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Tianshu Chu

Tianshu Chu

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

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Mingliang Zhu

Corresponding Author

Mingliang Zhu

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Bowei Zhang

Corresponding Author

Bowei Zhang

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Fu-Zhen Xuan

Corresponding Author

Fu-Zhen Xuan

Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai, 200237 P. R. China

Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai, 200237 P. R. China

School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 12 February 2025
Citations: 3

Abstract

Traditional strategies, by additive manufacturing, for integrating monolayer Ti3C2Tx nanosheets into macroscopic films with binders can effectively improve their mechanical strength, but the electrical conductivity is often sacrificed. Herein, inspired by the aligned nano-compacted feature of nacre, a flexible subtractive manufacturing strategy is reported to squeeze the interlayer 2D spacings by removing the nanoconfined water and interface terminations, leading to the improvement of mechanical strength and stability of Ti3C2Tx layered films without sacrificing the electrical conductivity. After the vacuum annealing of Ti3C2Tx films at 300 °C (A300), the interlayer 2D spacing decreased ≈0.1 nm with the surface functional groups (═O, ─OH, ─F) and interlayer water molecules greatly removed. The tensile strength (95.59 MPa) and Young's modulus (9.59 GPa) of A300 are ≈3 and ≈2 times improved, respectively. Moreover, the A300 films maintain a metallic electrical conductivity (2276 S cm−1) and show greatly enhanced stability. Compared to the original films, the mechanical strength of the A300 films is enhanced by increasing the interlayer friction and energy dissipation with the decrease of interlayer 2D spacings. This work provides a new way for engineering the self-assembled films with more functions for broad applications.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.