High-strength scalable MXene films through bridging-induced densification

被引：492

作者：

Wan, Sijie ^{[1
,2
]}

Li, Xiang ^{[1
]}

Chen, Ying ^{[3
]}

Liu, Nana ^{[2
,4
,5
]}

Du, Yi ^{[2
,4
,5
]}

Dou, Shixue ^{[4
,5
]}

Jiang, Lei ^{[1
,6
]}

Cheng, Qunfeng ^{[1
,5
]}

机构：

[1] Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Key Lab Bioinspired Smart Interfacial Sci & Techn, Sch Chem,Minist Educ, Beijing 100191, Peoples R China

[2] Beihang Univ, Sch Phys, Beijing 100191, Peoples R China

[3] Peking Univ, Dept Prosthodont, Sch & Hosp Stomatol, Beijing 100081, Peoples R China

[4] Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, Wollongong, NSW 2500, Australia

[5] Beihang Univ, BUAA UOW Joint Res Ctr, Beijing 100191, Peoples R China

[6] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Bioinspired Mat & Interfacial Sci, Beijing 100190, Peoples R China

来源：

SCIENCE | 2021年 / 374卷 / 6563期

基金：

澳大利亚研究理事会; 北京市自然科学基金; 中国博士后科学基金; 中国国家自然科学基金;

关键词：

MECHANICAL-PROPERTIES; COMPOSITE PAPER; GRAPHENE FILMS; ULTRASTRONG; THIN;

D O I：

10.1126/science.abg2026

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

MXenes are a growing family of two-dimensional transition metal carbides and/or nitrides that are densely stacked into macroscopically layered films and have been considered for applications such as flexible electromagnetic interference (EMI) shielding materials. However, the mechanical and electrical reliabilities of titanium carbide MXene films are affected by voids in their structure. We applied sequential bridging of hydrogen and covalent bonding agents to induce the densification of MXene films and removal of the voids, leading to highly compact MXene films. The obtained MXene films show high tensile strength, in combination with high toughness, electrical conductivity, and EMI shielding capability. Our high-performance MXene films are scalable, providing an avenue for assembling other two-dimensional platelets into high-performance films.

引用

页码：96 / +

页数：55

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