Effect of Nickel Shell Thickness of Ni microsphere on Microwave Absorption Properties of Ni microsphere@ MWCNTs Hybrids
Journal of Magnetism and Magnetic Materials(2020)
摘要
Magnetic nickel microspheres with core-shell structure were synthesized via depositing nickel metal on the polystyrene (PS) microspheres surface by the method of chemical platting, which were used to assemble a multiple-loss absorbers hybrids of Ni@MWCNTs. The nickel shell thickness of Ni-microspheres was controlled via regulating the platting solution concentration of nickel sulfate solution. XRD analysis indicated that the Ni@MWCNTs hybrids still retained the crystal structure of MWCNTs and nickel metal. The SEM results showed that the nickel shell thickness of Ni-microspheres was effectively regulated by altering the plating solution concentration. When the plating solution was 24 g/L, 12 g/L and 6 g/L, the nickel shell thickness of Ni-1, Ni-2 and Ni-3 microspheres were 55 nm, 45 nm and 20 nm, respectively. While the nickel shell thickness of Ni-2 microspheres was 45 nm, the Ni-2@MWCNTs hybrids …
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关键词
Magnetic loss,Chemical platting,Nickel shell thickness,MWCNTs
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