High MXene loading, nacre-inspired MXene/ANF electromagnetic interference shielding composite films with ultralong strain-tofailure and excellent Joule heating performance

作     者：Jiaen Wang Tianliang Song Wei Ming Moxi Yele Longfu Chen Hao Zhang Xiaojuan Zhang Benliang Liang Guangsheng Wang 

作者机构：School of Physical Science and EngineeringBeijing Jiaotong UniversityBeijing 100044China College of Chemistry and Materials EngineeringBeijing Technology and Business UniversityBeijing 100048China Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of EducationSchool of ChemistryBeihang UniversityBeijing 100191China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2024年第17卷第3期

页      面：2061-2069页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Financial support from the Talent Fund of Beijing Jiaotong University(No,2023XKRC015) the National Natural Science Foundation of China(No.52172081)is gratefully acknowledged 

主　　题：bioinspired aramid nanofiber networks ultralong strain-to-failure toughening mechanism electromagnetic interference shielding 

摘      要：The high power density and intelligence of next-generation flexible electronic devices bring many challenges to fabricate flexible composite films with electromagnetic interference(EMI)shielding effectiveness(SE)property and excellent toughness via a simple ***,inspired by the layered structure and biopolymer matrix networks in natural nacre,nacre-like layered Ti_(3)C2TX(MXene)/aramid nanofiber(ANF)films were fabricated through sol-gel,vacuum-assisted filtration,and ***-dimensional(3D)interconnected aramid nanofibers networks between adjacent layered MXene result in an ultralong strain-to-failure of the *** though the functional filler MXene contents are as high as 60 wt.%and 70 wt.%,the strain-to-failure of the films could reach astonishing values of 18.34%±1.86%and 14.43%±1.26%,*** the tensile strength could maintain about 85 ***,with such a high filler,the film can also withstand double folding and vigorous rubbing without damage,which could better adapt to a harsh application *** result means that this work provides a convenient way to prepare other high functional filler composite films with excellent mechanical *** EMI SE values could reach 45 and 52.15 dB at 60 wt.%and 70 wt.%MXene in 8.2–12.4 ***,the films have prominent Joule heating properties,high sensitivity(15 s),small voltage operation(0.5 V),and high operation constancy(1300 s).Therefore,nacre-inspired MXene/ANF composite films in this work have ability to apply in many areas including communication technology,military,and aerospace.