Facile Synthesis of Porous Nickel/Carbon Composite Microspheres with Enhanced Electromagnetic Wave Absorption by Magnetic and Dielectric Losses

• DOI: 10.1021/acsami.6b03159
• Publication Date: 2016-07-21T17:11:13Z
• Authors: Song Qiu; Hailong Lyu; Jiurong Liu; Yuzhen Liu; Nannan Wu; Wei Liu
• Keywords: Reflection loss; Nanometre; Dielectric loss; Saturation (graph theory)

Porous nickel/carbon (Ni/C) composite microspheres with diameters of ca. 1.2-1.5 μm were fabricated by a solvothermal method combined carbon reduction. The pore size the synthesized Ni/C ranged from several nanometers to 50 nm. porous exhibited saturation magnetization (MS) 53.5 emu g(-1) and coercivity (HC) 51.4 Oe. When tested as an electromagnetic (EM) wave absorption material, epoxy resin composites containing 60% 75% provided high-performance EM at thicknesses 3.0-11.0 1.6-7.0 mm in corresponding frequency ranges 2.0-12 2.0-18 GHz, respectively. superior performances derived synergy effects generated magnetic loss nickel, dielectric carbon, structure.