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Strong sequentially bridged MXene sheets

文献类型：期刊论文

作者Wan, Sijie4,5; Li, Xiang4; Wang, Yanlei6; Chen, Ying7; Xie, Xi1; Yang, Rui1,2; Tomsia, Antoni P.4; Jiang, Lei4; Cheng, Qunfeng3,4
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期2020-11-03
卷号117期号:44页码:27154-27161
ISSN号0027-8424
关键词MXene interface interactions mechanical properties electromagnetic interference shielding
DOI10.1073/pnas.2009432117
通讯作者Cheng, Qunfeng(cheng@buaa.edu.cn)
英文摘要Titanium carbide (Ti3C2Tx) MXene has great potential for use in aerospace and flexible electronics due to its excellent electrical conductivity and mechanical properties. However, the assembly of MXene nanosheets into macroscopic high-performance nano-composites is challenging, limiting MXene's practical applications. Here we describe our work fabricating strong and highly conductive MXene sheets through sequential bridging of hydrogen and ionic bonding. The ionic bonding agent decreases interplanar spacing and increases MXene nanosheet alignment, while the hydrogen bonding agent increases interplanar spacing and decreases MXene nanosheet alignment. Successive application of hydrogen and ionic bonding agents optimizes toughness, tensile strength, oxidation resistance in a humid environment, and resistance to sonication disintegration and mechanical abuse. The tensile strength of these MXene sheets reaches up to 436 MPa. The electrical conductivity and weight-normalized shielding efficiency are also as high as 2,988 S/cm and 58,929 dB.cm(2)/g, respectively. The toughening and strengthening mechanisms are revealed by molecular-dynamics simulations. Our sequential bridging strategy opens an avenue for the assembly of other high-performance MXene nanocomposites.
资助项目Excellent Young Scientist Foundation of National Natural Science Foundation of China[51522301] ; National Natural Science Foundation of China[22075009] ; National Natural Science Foundation of China[51961130388] ; National Natural Science Foundation of China[21875010] ; National Natural Science Foundation of China[51103004] ; National Natural Science Foundation of China[52003011] ; Newton Advanced Fellowship[NAF\R1\191235] ; Beijing Natural Science Foundation[JQ19006] ; 111 Project[B14009] ; National Postdoctoral Program for Innovative Talents[BX20200038] ; China Postdoctoral Science Foundation[2019M660387] ; Excellent Sino-Foreign Young Scientist Exchange Program of China Association for Science and Technology ; Postdoctoral Research Program on Innovative Practice in Jiangmen ; National Training Program on Innovation and Entrepreneurship of China for Undergraduates[201910006167]
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATL ACAD SCIENCES
WOS记录号WOS:000587503000020
资助机构Excellent Young Scientist Foundation of National Natural Science Foundation of China ; National Natural Science Foundation of China ; Newton Advanced Fellowship ; Beijing Natural Science Foundation ; 111 Project ; National Postdoctoral Program for Innovative Talents ; China Postdoctoral Science Foundation ; Excellent Sino-Foreign Young Scientist Exchange Program of China Association for Science and Technology ; Postdoctoral Research Program on Innovative Practice in Jiangmen ; National Training Program on Innovation and Entrepreneurship of China for Undergraduates
源URL[http://ir.imr.ac.cn/handle/321006/141310]  
专题金属研究所_中国科学院金属研究所
通讯作者Cheng, Qunfeng
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.ShanghaiTech Univ, Ctr Adaptat Syst Engn, Sch Creat & Arts, Shanghai 201210, Peoples R China
3.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
4.Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Minist Educ,Key Lab Bioinspired Smart Interfacial, Beijing 100191, Peoples R China
5.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China
6.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China
7.Peking Univ, Dept Prosthodont, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Wan, Sijie,Li, Xiang,Wang, Yanlei,et al. Strong sequentially bridged MXene sheets[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(44):27154-27161.
APA Wan, Sijie.,Li, Xiang.,Wang, Yanlei.,Chen, Ying.,Xie, Xi.,...&Cheng, Qunfeng.(2020).Strong sequentially bridged MXene sheets.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(44),27154-27161.
MLA Wan, Sijie,et al."Strong sequentially bridged MXene sheets".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.44(2020):27154-27161.

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来源：金属研究所

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