Study on the absorbing properties and regulatory mechanism of NiCo/C materials prepared by MOFs derivative method

• NiCo/C was prepared by MOFs derivative method. • The minimum reflection loss of NiCo/C is −51.5 dB. • It provides a new idea for exploring new wave absorbing materials. In order to solve the electromagnetic pollution problem, NiCo-MOFs-74 material was used as the parent material, and the new NiCo/C composite was prepared by high temperature carbonization method. The results show that the wave absorbing properties of NiCo/C composites change significantly with the change of the molar ratio of Ni/Co. When the molar ratio of Ni/Co is 1:1, the absorption performance of Ni 1 Co 1 /C composite is the best at the frequency of 16.75 GHz, the best reflection loss at 2.5 mm thickness is −51.5 dB, and the effective absorption bandwidth is 3.39 GHz.