TY - JOUR
T1 - Robust liquid metal reinforced cellulose nanofiber/MXene composite film with Janus structure for electromagnetic interference shielding and electro-/photothermal conversion applications
AU - Zhao, Hui
AU - Gao, Tong
AU - Yun, Jin
AU - Chen, Lixin
N1 - Publisher Copyright:
© 2024
PY - 2024/8/20
Y1 - 2024/8/20
N2 - MXene-based composite films are regarded as up-and-coming multifunctional electromagnetic interference (EMI) shielding materials. However, the conflict between strong mechanical properties and high electrical conductivity hinders their application in modern integrated electronics. Herein, in virtue of density-induced sedimentation, robust and multifunctional liquid metals-reinforced cellulose nanofibers (CNF)/MXene (LMs-CNF/MXene) composite films with Janus structure are fabricated by one-step vacuum-assisted filtration method. Not only does the nacre-like structure of the CNF/MXene layer not destroy, but the deposited liquid metals (LMs) layer can serve as conductive potentiation. Due to the special Janus structure, an “absorption-reflection-reabsorption” shielding process is created in LMs-CNF/MXene composite film to strengthen EMI shielding performance. Its shielding effectiveness can reach 51.9 dB at ∼27 µm, and the reflection coefficient falls to 0.89, below those of reported MXene-based shielding films. Meanwhile, the CNF/MXene layer can endow composite films with excellent mechanical properties with a super tensile strength of 110.3 MPa. Notably, the LMs-CNF/MXene EMI shielding composite films also integrate outstanding photo-/electrothermal conversion performances, which can effectively deice outdoors. The robust LMs-CNF/MXene EMI shielding composite films with satisfying photo-/electrothermal performances have extensive application prospects, such as aerospace, wearable electronics, and portable electronics.
AB - MXene-based composite films are regarded as up-and-coming multifunctional electromagnetic interference (EMI) shielding materials. However, the conflict between strong mechanical properties and high electrical conductivity hinders their application in modern integrated electronics. Herein, in virtue of density-induced sedimentation, robust and multifunctional liquid metals-reinforced cellulose nanofibers (CNF)/MXene (LMs-CNF/MXene) composite films with Janus structure are fabricated by one-step vacuum-assisted filtration method. Not only does the nacre-like structure of the CNF/MXene layer not destroy, but the deposited liquid metals (LMs) layer can serve as conductive potentiation. Due to the special Janus structure, an “absorption-reflection-reabsorption” shielding process is created in LMs-CNF/MXene composite film to strengthen EMI shielding performance. Its shielding effectiveness can reach 51.9 dB at ∼27 µm, and the reflection coefficient falls to 0.89, below those of reported MXene-based shielding films. Meanwhile, the CNF/MXene layer can endow composite films with excellent mechanical properties with a super tensile strength of 110.3 MPa. Notably, the LMs-CNF/MXene EMI shielding composite films also integrate outstanding photo-/electrothermal conversion performances, which can effectively deice outdoors. The robust LMs-CNF/MXene EMI shielding composite films with satisfying photo-/electrothermal performances have extensive application prospects, such as aerospace, wearable electronics, and portable electronics.
KW - Electro-/photothermal conversion
KW - Electromagnetic interference shielding
KW - Janus structure
KW - Mechanical properties
KW - MXene film
UR - http://www.scopus.com/inward/record.url?scp=85183966616&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2023.12.035
DO - 10.1016/j.jmst.2023.12.035
M3 - 文章
AN - SCOPUS:85183966616
SN - 1005-0302
VL - 191
SP - 23
EP - 32
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -