Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990252 | Journal of Alloys and Compounds | 2018 | 18 Pages |
Abstract
A suitable component with a benefited morphology is crucial to ensure the good electromagnetic absorption (EA) ability if used as electromagnetic absorber to deal with the severe electromagnetic interference crisis. In this research, NixCo3-xS4 hollow nanoprisms with tunable Ni/Co molar ratios have been successfully prepared through a simple liquid reflux and subsequently conducting a sulfidation reaction. The morphologies, crystal phase structures were analyzed by X-ray diffraction (XRD), and transmission electron microscopy (TEM). As revealed by TEM, the NixCo3-xS4 displayed hollow nanoprism shape with an average length of 1.2â¯Î¼m, width of 100â¯nm and edge thickness of 13â¯nm, respectively. Afterward, the electromagnetic absorption abilities of these NixCo3-xS4 products at various x values (xâ¯=â¯0.2, 0.5, 0.8) were investigated in terms of the theory of transmission lines. The results demonstrated that the bandwidth ((RLâ¯â¤â¯â10â¯dB) with a specimen thickness of 2.0â¯mm could cover 5.6â¯GHz when xâ¼0.5, which is much greater than Ni0.2Co2.8S4 and Ni0.8Co2.2S4 filling layers. The electromagnetic loss mechanism was discussed in depth, which was correlated with molar ratios, and unique hollow nanoprism structure.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ye Cheng, Yuhang Guo, Zhenya Zhang, Songtao Dong, Hongying Wang,