MOF-derived multi-interface carbon-based composites with enhanced polarization loss and efficient microwave absorption  

作　　者：Hongjiao Qu Peng Zheng Tao Wang Xingyu Yu Junjie Pan Xiaoli Fan Tengfei Zhang Xin Sun Jianping He 

机构地区：[1]College of Materials Science and Technology,Centre for Hydrogenergy,Jiangsu Key Laboratory of Materials and Technology for Energy Conversion,Nanjing University of Aeronautics and Astronautics,Nanjing,P.R.China [2]AVIC,Jiangxi Hongdu Aviation Industry Group Corporation Limited,Jiangxi,P.R.China [3]School of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing,P.R.China [4]Science and Technology on Electromagnetic Scattering Laboratory,Beijing,P.R.China

出　　处：《International Journal of Smart and Nano Materials》2022年第3期465-480,共16页国际智能和纳米材料杂志（英文）

基　　金：This work was supported by the National Defense Technology Innovation Special Zone Spark Project[2016300TS00911901].

摘　　要：Metal-organic framework materials(MOFs)have been widely stu-died because of their adjustable composition and controllable structure in the field of microwave absorption(MA).Therein,Prussian blue analogs(PBA)have attracted the attention of researchers with ultra-high metal content.However,the attenua-tion ability of microwave for PBA-based composites is still unsatis-factory up to now.Therefore,the NiFe/CoFe@C composites were prepared by carbonizing polymetallic PBA(NiCoFe PBA)materials in this work,and the influence of different metal alloy components on MA was explored by adjusting the ratio of metal ions(Ni^(2+)/Co^(2+)).Moreover,the NiFe/CoFe@C composites have rich interfaces and enhance the polarization loss due to the introduction of Ni and it has an optimal performance at 2.7 mm that is the reflection loss(RL)is−41.49 dB and an effective absorption bandwidth(EAB)is 7.12 GHz with 1/1(Ni^(2+)/Co^(2+)).The above data provides a research idea for obtaining light and efficient absorbers.

关 键 词：Prussian blue analogs carbon-based composites metal alloy polarization loss microwave absorption 

分 类 号：TB33[一般工业技术—材料科学与工程]