In situ regulating aspect ratio of bamboo-like CNTs via CoxNi1−x-catalyzed growth to pursue superior microwave attenuation in X-band

2019 ◽  
Vol 6 (1) ◽  
pp. 309-316 ◽  
Author(s):  
Yan Cheng ◽  
Jieming Cao ◽  
Hualiang Lv ◽  
Huanqin Zhao ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Microwave Absorption ◽  
Aspect Ratios ◽  
Microwave Attenuation ◽  
X Band ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Controlling aspect ratios of bamboo-like CNTs to achieve superior microwave absorption performance in X-band.

In situ growth of B4C nanowires on activated carbon felt to improve microwave absorption performance

2020 ◽  
Vol 116 (20) ◽  
pp. 203101
Author(s):  
Beibei Wang ◽  
Qiangang Fu ◽  
Qiang Song ◽  
Zhaoju Yu ◽  
Ralf Riedel
Keyword(s):  
Activated Carbon ◽  
Microwave Absorption ◽  
In Situ Growth ◽  
Carbon Felt ◽  
Absorption Performance ◽  
Microwave Absorption Performance

In-situ synthesis of layered coal-based carbon/Co porous magnetic composites with promising microwave absorption performance

2021 ◽  
Author(s):  
Yang Fan ◽  
Ximing Zhang ◽  
Jingyu Wang ◽  
Hengdong Ren ◽  
Yin Liu ◽  
...  
Keyword(s):  
Phase Composition ◽  
Chemical Composition ◽  
Microwave Absorption ◽  
In Situ Synthesis ◽  
Magnetic Composites ◽  
Microwave Absorbing Properties ◽  
In Situ Method ◽  
Absorption Performance ◽  
Microwave Absorption Performance

In this paper, light and ultra-thin coal-based carbon cobalt composites (CBC/Co) with excellent microwave absorbing properties were synthesized by using an in-situ method from anthracite. Phase composition and chemical composition...

scholarly journals NiFe2O4 nanoparticles supported on cotton-based carbon fibers and their application as a novel broadband microwave absorbent

RSC Advances ◽  
2019 ◽  
Vol 9 (51) ◽  
pp. 29959-29966 ◽  
Author(s):  
Wanxi Li ◽  
Hongxue Qi ◽  
Fang Guo ◽  
Xianjun Niu ◽  
Yien Du ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbon Fibers ◽  
X Band ◽  
Absorption Performance ◽  
Nife2o4 Nanoparticles ◽  
Microwave Absorption Performance ◽  
Ku Band

NiFe2O4 nanoparticles supported on cotton-based carbon fibers exhibited excellent microwave absorption performance in the X-band and Ku-band.

LiCoxNi1−xO2 with high dielectric and microwave absorption performance in X-band

2019 ◽  
Vol 45 (14) ◽  
pp. 17800-17805 ◽  
Author(s):  
Minghao Yang ◽  
Wancheng Zhou ◽  
Yin Liu ◽  
Lechen Li ◽  
Fa Luo ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
X Band ◽  
Absorption Performance ◽  
High Dielectric ◽  
Microwave Absorption Performance

scholarly journals 3D Seed-Germination-Like MXene with In Situ Growing CNTs/Ni Heterojunction for Enhanced Microwave Absorption via Polarization and Magnetization

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiao Li ◽  
Wenbin You ◽  
Chunyang Xu ◽  
Lei Wang ◽  
Liting Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Seed Germination ◽  
Microwave Absorption ◽  
Magnetic Loss ◽  
Impedance Matching ◽  
Matching Condition ◽  
Ni Nanoparticles ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Highlights Benefiting from the possible “seed-germination” effect, the “seeds” Ni2+ grow into “buds” Ni nanoparticles and “stem” carbon nanotubes (CNTs) from the enlarged “soil” of MXene skeleton. Compared with the traditional magnetic agglomeration, the MXene-CNTs/Ni hybrids exhibit the highly spatial dispersed magnetic architecture. 3D MXene-CNTs/Ni composites hold excellent microwave absorption performance (−56.4 dB at only 2.4 mm). Abstract Ti3C2Tx MXene is widely regarded as a potential microwave absorber due to its dielectric multi-layered structure. However, missing magnetic loss capability of pure MXene leads to the unmatched electromagnetic parameters and unsatisfied impedance matching condition. Herein, with the inspiration from dielectric-magnetic synergy, this obstruction is solved by fabricating magnetic CNTs/Ni hetero-structure decorated MXene substrate via a facile in situ induced growth method. Ni2+ ions are successfully attached on the surface and interlamination of each MXene unit by intensive electrostatic adsorption. Benefiting from the possible “seed-germination” effect, the “seeds” Ni2+ grow into “buds” Ni nanoparticles and “stem” carbon nanotubes (CNTs) from the enlarged “soil” of MXene skeleton. Due to the improved impedance matching condition, the MXene-CNTs/Ni hybrid holds a superior microwave absorption performance of − 56.4 dB at only 2.4 mm thickness. Such a distinctive 3D architecture endows the hybrids: (i) a large-scale 3D magnetic coupling network in each dielectric unit that leading to the enhanced magnetic loss capability, (ii) a massive multi-heterojunction interface structure that resulting in the reinforced polarization loss capability, confirmed by the off-axis electron holography. These outstanding results provide novel ideas for developing magnetic MXene-based absorbers.

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