Coupling Hollow Fe3O4–Fe Nanoparticles with Graphene Sheets for High-Performance Electromagnetic Wave Absorbing Material

2016 ◽  
Vol 8 (6) ◽  
pp. 3730-3735 ◽  
Author(s):  
Bin Qu ◽  
Chunling Zhu ◽  
Chunyan Li ◽  
Xitian Zhang ◽  
Yujin Chen
Keyword(s):  
Electromagnetic Wave ◽  
High Performance ◽  
Graphene Sheets ◽  
Fe Nanoparticles ◽  
Absorbing Material

Growth of CoFe2O4 hollow nanoparticles on graphene sheets for high-performance electromagnetic wave absorbers

2018 ◽  
Vol 6 (47) ◽  
pp. 12781-12787 ◽  
Author(s):  
Feng Yan ◽  
Shen Zhang ◽  
Xiao Zhang ◽  
Chunyan Li ◽  
Chunling Zhu ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Wall Thickness ◽  
High Performance ◽  
Graphene Sheets ◽  
Absorption Properties ◽  
Hollow Nanoparticles ◽  
Graphene Surface ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption

CoFe2O4 hollow nanoparticles, with a diameter and wall thickness of merely 9.0 and 3.0 nm, respectively, were anchored on a graphene surface, showing excellent electromagnetic wave absorption properties.

scholarly journals Direct Ink Writing of Highly Conductive MXene Frames for Tunable Electromagnetic Interference Shielding and Electromagnetic Wave-Induced Thermochromism

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Xinyu Wu ◽  
Tingxiang Tu ◽  
Yang Dai ◽  
Pingping Tang ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Normal Operation ◽  
List Type ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Direct Ink Writing ◽  
Aluminum Ions ◽  
Wave Induced

Highlights 3D printing of MXene frames with tunable electromagnetic interference shielding efficiency is demonstrated. Highly conductive MXene frames are reinforced by cross-linking with aluminum ions. Electromagnetic wave is visualized by electromagnetic-thermochromic MXene patterns. Abstract The highly integrated and miniaturized next-generation electronic products call for high-performance electromagnetic interference (EMI) shielding materials to assure the normal operation of their closely assembled components. However, the most current techniques are not adequate for the fabrication of shielding materials with programmable structure and controllable shielding efficiency. Herein, we demonstrate the direct ink writing of robust and highly conductive Ti3C2Tx MXene frames with customizable structures by using MXene/AlOOH inks for tunable EMI shielding and electromagnetic wave-induced thermochromism applications. The as-printed frames are reinforced by immersing in AlCl3/HCl solution to remove the electrically insulating AlOOH nanoparticles, as well as cross-link the MXene sheets and fuse the filament interfaces with aluminum ions. After freeze-drying, the resultant robust and porous MXene frames exhibit tunable EMI shielding efficiencies in the range of 25–80 dB with the highest electrical conductivity of 5323 S m−1. Furthermore, an electromagnetic wave-induced thermochromic MXene pattern is assembled by coating and curing with thermochromic polydimethylsiloxane on a printed MXene pattern, and its color can be changed from blue to red under the high-intensity electromagnetic irradiation. This work demonstrates a direct ink printing of customizable EMI frames and patterns for tuning EMI shielding efficiency and visualizing electromagnetic waves.

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