Achieving excellent electromagnetic wave absorption property by constructing VO2 coated biomass carbon heterostructures

Mao, Fuzhou; Long, Lan; Gui-lin, Zeng; Chen, Han; Li, Yang; Zhou, Wei

doi:10.1016/j.diamond.2022.109422

Cited by 64 publications

(15 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 26 ] Further investigation on the elemental composition as well as the chemical and electronic state of the atoms of materials was performed by X‐ray photoelectron spectroscopy (XPS). [ 20,43 ] As displayed in Figure S4 (Supporting Information), the full‐scan XPS spectrum confirms the existence of C, N, O, and Co elements in the CWF/EP/Co film, and the atomic contents are 93.97%, 1.16%, 4.46%, and 0.41%, respectively. [ 44 ]…”

Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

“…Consequently, the development of materials exhibiting high EMI shielding performance and favorable EM wave absorption properties constitutes an essential objective in EMI shielding research. [20] Metalorganic frameworks (MOFs) and their derivatives have attracted much attention due to their unique microstructures and enhanced EM properties. Carbonization is often used to tune the microstructure of MOFs crystals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

MOF@wood Derived Ultrathin Carbon Composite Film for Electromagnetic Interference Shielding with Effective Absorption and Electrothermal Management

Ma,

Liu,

Luo

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Recently, there has been a growing demand for ultra‐thin carbonized wood films (CWF) with high shielding efficiency (SE) to replace non‐renewable alternatives. Researchers aim to enhance electromagnetic (EM) wave absorption and improve electromagnetic interference (EMI) SE in CWF materials to reduce secondary pollution from reflected EM waves. In this work, the carbonized wood composite film (CWF/EP/Co) with a thickness of 120 µm through the process of hot‐pressing and carbonizing wood soaked in a mixed solution of water‐borne epoxy (EP) and Co/Zn‐MOF (ZIF‐67/8) is obtained. The CWF/EP/Co film exhibits excellent conductivity (105 S cm−1) and demonstrates an excellent EMI SE (73 dB) at a 200 µm thickness. Remarkably, the specific EMI shielding effectiveness (SSE/t) of CWF/EP/Co films reached 15833.3 dB·cm2·g−1 in the X‐band, making it the highest reported value among all wood‐derived EMI shielding materials. CWF/EP/Co films have a high absorption coefficient (A) of 0.4, indicating their effectiveness in absorbing EM waves. Furthermore, the EMI shielding effect of the large‐scale wallpaper (170 mm×170 mm) is confirmed by finite element analysis. Additionally, the CWF/EP/Co film exhibits good mechanical properties and effective Joule heating performance. This shielding film shows promise in applications such as buildings and smart homes, providing EMI shielding and warming effects.

show abstract

Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

MOF@wood Derived Ultrathin Carbon Composite Film for Electromagnetic Interference Shielding with Effective Absorption and Electrothermal Management

Ma,

Liu,

Luo

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…The weakened portion is a sum equivalent to the reflection losses at the two interfaces. Absorption loss refers to the loss of electromagnetic energy caused by the propagation and heating of EMWs in the shield. , When the EMWs reach the shield surface, they reflect the incident wave owing to the discontinuous impedance at the interface between the material and the air. The energy that is not reflected from the surface and enters the shield is weakened by the shielding materials when it propagates through the shield, which is called absorption.…”

Section: Electromagnetic Shieldingmentioning

confidence: 99%

Electrospun Composite Nanofiber Membranes for Electromagnetic Protection

Yan,

2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

With the rapid development of electronic information technology, the impact of electromagnetic waves (EMWs) on human health, information security, and precision electronic equipment cannot be ignored. Therefore, how to prepare lightweight, flexible and multifunctional materials to shield EMWs is an urgent problem to be solved. Electrospun nanofiber membranes (NFMs) have many merits, such as being lightweight and porous and having a high specific surface area, for electromagnetic interference (EMI) shielding. In this review, the mechanism of EMI shielding as well as the principle and development of electrospinning are first introduced. Then, the commonly used materials in electrospun NFMs for EMI shielding are summarized, and the factors affecting their EMI shielding performance are discussed. Afterward, the modification methods to enhance the EMI shielding performance of NFMs are investigated. Finally, the enhancement effects of different structures of NFMs on their EMI shielding performance are analyzed. This review can provide a more comprehensive understanding of electrospun NFMs used for EMI shielding and play a guiding role in preparing electrospun NFMs with excellent EMI shielding performance in the future.

show abstract

“…Notably, prevailing adhesives employed in wood panel fabrication are predominantly petroleum based, encompassing urea-formaldehyde (UF) resins, melamine and phenol-formaldehyde (PF) resins, as well as epoxy (EP) and polyurethane (PU) resins, etc. The finite nature of petroleum resources and environmental repercussions arising from their extraction necessitate a shift towards leveraging abundant but underutilized renewable biomass [9][10][11][12][13][14][15] resources. The application of biomass resources in wood adhesives, in addition to bolstering environmental preservation, aligns with sustainable resource management imperatives.…”

Section: Introductionmentioning

confidence: 99%