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Title: Hydrothermal Carbonization of V2O5 Nanowires into Aerogels for Excellent Green Electromagnetic Interference Shielding
Authors: Aparna, P N
Surendran, K P
Keywords: lightweight
EMI shielding
aerogel
conducting polymer composite
specific shielding efficiency
V2O5 nanowire
Issue Date: 18-Aug-2023
Publisher: American Chemical Society
Citation: ACS Applied Nano Materials; 6(17):16065–16075
Abstract: Realizing a potential lightweight electromagnetic interference (EMI) shield with high absorption and low secondary reflection is still challenging. Herein, a novel ultralight aerogel was prepared by simple hydrothermal carbonization of V2O5 nanowires. The highly porous and three-dimensional (3D) conductive nanowire networks inside the aerogel simultaneously support EM wave dissipation through multiple internal reflections and reduce shield density to 0.026 g/cc. The designer aerogels exhibit high shielding efficiency (SE) in X, Ku, and K bands with a maximum EMI SE of 43.24 dB at 26.5 GHz. Exceptional specific shielding efficiency of 5147.6 dB cm2/g was achieved in the K band with a high green index of 1.58. The lightweight carbonized V2O5 aerogels are promising shielding structures suitable for aircraft and portable device applications. The hydrothermal synthesis procedure with hazard-free materials described here proves that efficient shielding aerogels can be successfully constructed through facile synthesis protocols.
URI: https://pubs.acs.org/doi/full/10.1021/acsanm.3c03308
http://localhost:8080/xmlui/handle/123456789/4563
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