Abstract
Carbon nanotube aerogels are highly desirable for application in the field of the energy conversion and energy storage due to their superior electrical conductivity. Herein, three-dimensional carbon nanotube/nylon 66 (3D CNT/PA66) aerogels have been fabricated for the first time by freeze-drying, where CNTs are coated with the PA66. Meanwhile, CNT/PA66 aerogels can form a continuous conductive network at low CNTs loading. Therefore, CNT/PA66 aerogels have good electromagnetic wave (EM) absorption properties with a maximum reflection loss of −44.3 dB at 13.9 GHz, a reflection loss of less than −10 dB in the frequency range of 12.2–15.7 GHz, and a bandwidth of 3.5 GHz. Our results indicate that the CNT/PA66 aerogel is a promising platform for the preparation of high-performance EM absorbing composites.
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