Abstract
Two-dimensional (2D) hierarchical Mn2O3@graphene composite is synthesized by a one-step solid-phase reaction.The nanosheets of Mn2O3 are vertically grown on few-layered graphene,constructing a unique 2D hierarchical structure.As an anode material for lithium-ion batteries (LIBs),this hierarchical composite displays excellent electrochemical performances,showing an extraordinary reversible discharge capacity of 2125.9 mA h g-1.Moreover,a record high reversible capacity of 1746.8 mA h g-1 is maintained after 100 cycles at a current density of 100 mA g-1,which retains 82.2 ％ of the initial capacity.Such an outstanding performance could be attributed to its novel structure and the synergistic effects between the Mn2O3 and graphene.
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