Flower-like Bi0.9La0.1FeO3 microspheres modified by reduced graphene oxide as a thin and strong electromagnetic wave absorber

Herein, we developed a three-dimensional composite of reduced graphene oxide (rGO) sheets assembled with flower-like, porous Bi 0.9 La 0.1 FeO 3 microspheres , using a facile chemical etching process. Their electromagnetic wave absorption properties were investigated. The maximal reflection loss of the composite with the rGO amount of 30 mg reaches −69.97 dB at a thin thickness of 1.91 mm with an effective bandwidth of 5.2 GHz. The composite with 45 mg rGO also exhibits a maximal reflection loss of −58.19 dB at a thinner thickness of only 1.58 mm. The above excellent performances are due to the enhanced conductivity and surface area by the introduction of rGO and the particular microstructure containing abundant surface defects and micro-interfaces, which make it superior to other rGO-based composites reported previously and to be a promising candidate for electromagnetic wave absorber.