Abstract
NiCo layered double hydroxide (LDH) nanowire arrays (NWAs) were grown on carbon fabric (CF) via hydrothermal processes, then annealed into NiCo2O4 NWAs at 350 °C and finally melted into NiCo2 particles at 800 °C. The influence of such NiCo compounds on the electromagnetic interference (EMI) shielding performance of CF was investigated, and the results suggested that the LDH NWAs enhanced the microwave attenuation of CF, except for its shielding effectiveness (SE). In contrast, the NiCo2O4 NWAs with superior conductivity improved the SE of CF mainly via multiple reflections, while its shielding mechanism was essentially unchanged. Only the NiCo2 particles could basically improve the surface reflection of CF and enhance its internal absorption simultaneously. Consequently, the CF-NiCo2 composite showed a total SE of 52 dB, reflectivity of ∼0.92 and absorptivity of ∼0.08, better than 44 dB, ∼0.94 and ∼0.06 of CF, paving a new way for the fabrication of high-performance EMI shielding fabrics.
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