A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical demands.Herein,...A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical demands.Herein,carbon-coated cobalt composites were prepared by adsorbing magnetic metal cations into an anionic crystalline framework through an electrostatic encapsulate process.Excellent reflection loss(RL_(min))of-40.49 d B and effective absorption bandwidth(EAB)of 5.36 GHz(RL<-10 d B,10.4-15.76 GHz)was achieved with an optimal radar cross section(RCS)reduction of 34.9 dB·m^(2) for the sample tested.For commercial applications,Co@CN-4 was integrated into sodium carboxymethyl cellulose(CMC)aerogel to create an ultra-lightweight composite aerogel that is compressive resistant and heat-holding while also having photothermal conversion capabilities.The hydrophobic modification makes it more widely useful.This study provides a new strategy for EWAMs to integrate versatility and improve their application prospects.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.22001156 and 22301239)the Youth Talent Fund of University Association for Science and Technology in Shaanxi,China(No.20210602)+4 种基金International Cooperation Key Project of Science and Technology Department of Shaanxi,China(No.2022KWZ-06)the research project of Science and Technology Department of Shaanxi Province(No.2021JQ-533)the Research Program of the Shaanxi Provincial Department of Education(No.23JK0596)the open Foundation of Xi’an Key Laboratory of Functional Supramolecular Structure and Materials(No.CFZKFKT23003)Shaanxi Provincial Department of Education service local special project,industrialization cultivation project(No.23JC007)。
文摘A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical demands.Herein,carbon-coated cobalt composites were prepared by adsorbing magnetic metal cations into an anionic crystalline framework through an electrostatic encapsulate process.Excellent reflection loss(RL_(min))of-40.49 d B and effective absorption bandwidth(EAB)of 5.36 GHz(RL<-10 d B,10.4-15.76 GHz)was achieved with an optimal radar cross section(RCS)reduction of 34.9 dB·m^(2) for the sample tested.For commercial applications,Co@CN-4 was integrated into sodium carboxymethyl cellulose(CMC)aerogel to create an ultra-lightweight composite aerogel that is compressive resistant and heat-holding while also having photothermal conversion capabilities.The hydrophobic modification makes it more widely useful.This study provides a new strategy for EWAMs to integrate versatility and improve their application prospects.
