文献类型：期刊文献

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

作者：Rong, Chao[1,2,3];Su, Ting[1,2,3];Chu, Tianshu[1,2,3];Zhu, Mingliang[1,2,3];Zhang, Bowei[1,2,3];Xuan, Fu-Zhen[1,2,3]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：21

期号：12

外文期刊名：SMALL

收录：;EI(收录号：20250917945065);WOS:【SCI-EXPANDED(收录号:WOS:001418999100001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant. No. 52422505, No. 12274124), the Shanghai Pilot Program for Basic Research (Grant. No. 22TQ1400100-6), the Fundamental Research Funds for the Central Universities, and the Innovative Research Group Project of the National Natural Science Foundation of China (Grant. No. 52321002).

语种：英文

外文关键词：2D materials; conductivity; mechanical properties; subtractive manufacturing

摘要：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 degrees C (A300), the interlayer 2D spacing decreased approximate to 0.1 nm with the surface functional groups (& boxH;O, & horbar;OH, & horbar;F) and interlayer water molecules greatly removed. The tensile strength (95.59 MPa) and Young's modulus (9.59 GPa) of A300 are approximate to 3 and approximate to 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.