A facile synthesis of a cobalt nanoparticle-graphene nanocomposite with high-performance and triple-band electromagnetic wave absorption properties.

Ferromagnetic metal nanoparticle/graphene nanocomposites are promising as excellent electromagnetic (EM) wave absorption materials. In this work, we used a facile method to synthesize a cobalt nanoparticle-graphene (CoNP-G) nanocomposite. The obtained CoNPs-G exhibited a saturation magnetization ( ) of 31.