▎ 摘　　要

A simple one-step method to immobilize zinc oxide nanoparticles (ZnO NPs) in reduced graphene oxide (RGO) supporting framework is reported in this work. Under mild hydrothermal condition, ZnO NPs function as an effective catalyzer for few-layered graphene oxide (GO) deoxygenation to construct an RGO protecting framework and in the meantime ZnO NPs are immobilized between the RGO sheets. The synthesized ZnO/RGO composite not only delivered good lithium ion storage capability with a reversible capacity of 560 mA h.g(-1) for 250 cycles under a current density of 500 mA g(-1), but also exhibited good electromagnetic microwave absorption performance with the maximum reflection loss value of -67.13 dB when the thickness is 3.2 mm while the effective absorption bandwidth is 7.44 GHz with the thickness of 2.8 mm. The improved performances of the ZnO/RGO composite compared with bare ZnO NPs are ascribed to the synergistic effect from well-dispersed ZnO NPs and RGO framework, particularly, the formation of Zn-O-C bond between the two components brings in good immobilization between the two components, which was verified by both theoretical calculation and XPS characterization techniques. The method to prepared ZnO/RGO composite is facile, eco-friendly and effective, which has great potential to find wider applications for massive production.