TY - JOUR
T1 - Building the conformal protection of VB-group VS2 laminated heterostructure based on biomass-derived carbon for excellent broadband electromagnetic waves absorption
AU - Wang, Honghan
AU - Zhang, Huibin
AU - Cheng, Junye
AU - Liu, Tingting
AU - Zhang, Deqing
AU - Zheng, Guangping
AU - Zhai, Shangru
AU - Cao, Maosheng
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 52102368 , 52072192 and 51977009 ), Regional Joint Fund for Basic Research and Applied Basic Research of Guangdong Province (No. 2020SA001515110905 ).
Publisher Copyright:
© 2023 The Authors
PY - 2023/5/1
Y1 - 2023/5/1
N2 - Although VB-Group transition metal disulfides (TMDs) VS2 nanomaterials with specific electronic properties and multiphase microstructures have shown fascinating potential in the field of electromagnetic wave (EMW) absorption, the efficient utilization of VS2 is limited by the technical bottleneck of its narrow effective absorption bandwidth (EAB) which is attributed to environmental instability and a deficient electromagnetic (EM) loss mechanism. In order to fully exploit the maximal utilization values of VS2 nanomaterials for EMW absorption through mitigating the chemical instability and optimizing the EM parameters, biomass-based glucose derived carbon (GDC) like sugar-coating has been decorated on the surface of stacked VS2 nanosheets via a facile hydrothermal method, followed by high-temperature carbonization. As a result, the modulation of doping amount of glucose injection solution (Glucose) could effectively manipulate the encapsulation degree of GDC coating on VS2 nanosheets, further implementing the EM response mechanisms of the VS2/GDC hybrids (coupling effect of conductive loss, interfacial polarization, relaxation, dipole polarization, defect engineering and multiple reflections and absorptions) through regulating the conductivity and constructing multi-interface heterostructures, as reflected by the enhanced EMW absorption performance to a great extent. The minimum reflection loss (Rmin) of VS2/GDC hybrids could reach −52.8 dB with a thickness of 2.7 mm at 12.2 GHz. Surprisingly, compared with pristine VS2, the EAB of the VS2/GDC hybrids increased from 2.0 to 5.7 GHz, while their environmental stability was effectively enhanced by virtue of GDC doping. Obviously, this work provides a promising candidate to realize frequency band tunability of EMW absorbers with exceptional performance and environmental stability.
AB - Although VB-Group transition metal disulfides (TMDs) VS2 nanomaterials with specific electronic properties and multiphase microstructures have shown fascinating potential in the field of electromagnetic wave (EMW) absorption, the efficient utilization of VS2 is limited by the technical bottleneck of its narrow effective absorption bandwidth (EAB) which is attributed to environmental instability and a deficient electromagnetic (EM) loss mechanism. In order to fully exploit the maximal utilization values of VS2 nanomaterials for EMW absorption through mitigating the chemical instability and optimizing the EM parameters, biomass-based glucose derived carbon (GDC) like sugar-coating has been decorated on the surface of stacked VS2 nanosheets via a facile hydrothermal method, followed by high-temperature carbonization. As a result, the modulation of doping amount of glucose injection solution (Glucose) could effectively manipulate the encapsulation degree of GDC coating on VS2 nanosheets, further implementing the EM response mechanisms of the VS2/GDC hybrids (coupling effect of conductive loss, interfacial polarization, relaxation, dipole polarization, defect engineering and multiple reflections and absorptions) through regulating the conductivity and constructing multi-interface heterostructures, as reflected by the enhanced EMW absorption performance to a great extent. The minimum reflection loss (Rmin) of VS2/GDC hybrids could reach −52.8 dB with a thickness of 2.7 mm at 12.2 GHz. Surprisingly, compared with pristine VS2, the EAB of the VS2/GDC hybrids increased from 2.0 to 5.7 GHz, while their environmental stability was effectively enhanced by virtue of GDC doping. Obviously, this work provides a promising candidate to realize frequency band tunability of EMW absorbers with exceptional performance and environmental stability.
KW - Broadband absorption
KW - Environmental stability
KW - Multi-interface heterostructures
KW - VS/GDC hybrids
UR - http://www.scopus.com/inward/record.url?scp=85150454022&partnerID=8YFLogxK
U2 - 10.1016/j.jmat.2022.12.003
DO - 10.1016/j.jmat.2022.12.003
M3 - Journal article
AN - SCOPUS:85150454022
SN - 2352-8478
VL - 9
SP - 492
EP - 501
JO - Journal of Materiomics
JF - Journal of Materiomics
IS - 3
ER -