3D composites of ZnSnO_3 nanoplates/reduced graphene oxide aerogels as an advanced lithium-ion battery anode

摘要

Abstract Zinc-based bimetal oxides have received considerable attention as anode for lithium-ion batteries (LIBs). A one-pot self-assembly hydrothermal method is developed for the fabrication of 3D hierarchical structure aerogels from zinc stannate (ZnSnO~(3)) and reduced graphene oxide (rGO). 3D interconnected porous structure with ZnSnO~(3)hexagon nanoplates uniformly dispersed on graphene sheets has been constructed successfully, in which the crystalline hexagon nanoplates ZnSnO~(3)are firstly used to prepare ZnSnO~(3)-based anode materials for LIBs. The as-prepared ZnSnO~(3)nanoplates/reduced graphene oxide aerogels (ZnSnO~(3)–rGAs) electrode demonstrates an excellent reversible capacity (780 mAh g_(−1)) after 200 cycles at a certain current density (100 mA g_(−1)) and still delivers a specific capacity of 460 mAh g_(−1)even at 1000 mA g_(−1). The superior performance of lithium storage is attributed to the 3D porous hierarchical structure and the synergistic effects of uniform hexagon nanoplates ZnSnO~(3)and rGO sheets.