▎ 摘　　要

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. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.