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Increasingly serious electromagnetic wave pollution puts forward higher requirements for efficient and widely applicable electromagnetic interference (EMI) shielding materials. Herein, aristate sphere Ni@Carbon fibers were synthesized through an in-situ ultrasonic reduction method. The phase structure, morphology, magnetic, electrical conductivity and EMI shielding performances of the specimens were analyzed by various technologies. Experimental results revealed that the introduction of magnetic aristate sphere Ni endowed the carbon fibers with an outstanding EMI shielding effectiveness (SE) of 38.5 dB (99.9% attenuation) and specific shielding effectiveness (SSE/T) of 642 dB cm 2 /g. The advanced EMI shielding performances of aristate sphere Ni/Carbon fibers could originate from the synergistic effect of high electrical conductivity, well magnetic loss, and multiple electromagnetic reflection. Consequently, aristate sphere Ni@Carbon fibers would be an ideal candidate as light-weight, high-efficiency and widely applicable EMI shielding materials in electromagnetic shielding applications fields.

Aristate sphere Ni@Carbon fibers with advanced electromagnetic interference shielding performances