Hydrangea-like Ni/NiO/C composites derived from metal-organic frameworks with superior microwave absorption

By L. Lei, Z. Yao, Jintang Zhou, Wenjian Zheng, Bo Wei, J. Zu, Ke Yan. 2021

167 citations recorded by the source corpus.

Abstract The hydrangea-like Ni/NiO/C composites have been successfully synthesized by in-situ pyrolysis stemmed from Ni-MOFs. The composition and structure can be adjusted by controlling the pyrolysis temperature, and it leads to the graphitization degree and electromagnetic parameters. A broad effective absorption bandwidth of the composite up to 5.67 GHz with the maximum reflection loss of −47.72 dB in 1.9 mm thickness. The results demonstrate hydrangea-like Ni/NiO/C composites have superior microwave absorption resulted from the synergistic effect between the unique structure, dielectric loss, and magnetic loss. Therefore, this work confirmed that hydrangea-like structure composite can be an ideal candidate for highly efficient microwave absorption materials with a facile preparation process and flexible control of electromagnetic parameters.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/fa448ecf73d06f25b5269819d1b1cac76381be12