AUTHOR=Du Yu-Hui , Gao Na , Li Mao-Dong , Wang Lei , Wang Guang-Sheng 

TITLE=Preparation and Microwave Absorption Properties of NixSy/PVDF Nanocomposites

JOURNAL=Frontiers in Materials

VOLUME=Volume 7 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.00080

DOI=10.3389/fmats.2020.00080

ISSN=2296-8016

ABSTRACT=Octahedral NixSy nanoparticles and NixSy/PVDF nanocomposites are successfully prepared by solvothermal method. The electromagnetic absorption performance of NixSy/PVDF with different filling concentrations is investigated in the range of 2-18 GHz. An optimal reflection loss value of −32.75 dB at 10.48 GHz is achieved for the filled with concentration of 20 wt%, and the bandwidth less than −10 dB can reach up to 4.48 GHz with a thickness of 3 mm. Furthermore, fundamental mechanisms for absorbing is discussed, it is found that the interface polarization, electric dipole polarization, Debye relaxation and impedance matching are the main factors affecting the absorption performance of NixSy/PVDF.