▎ 摘　　要

To solve the main obstacles associated with the charge-discharge process of alpha-Fe2O3 anode, such as serious volume expansion and low initial coulombic efficiency, 3D porous alpha-Fe2O3/nitrogen-doped graphene(NGNS)/carbon nanotubes (CNTs) nanocomposites were synthesized via a facile hydrothermal method. The nanocomposites were characterized by XRD, SEM, TEM and XPS measurements and the results indicated that CNTs were successfully inserted into the interlamination between N-GNS, providing more defects than pristine GNS for alpha-Fe2O3 nucleating and the lithium ion storage. alpha-Fe2O3 nanoparticles with an average size of 30 similar to 70 nm were uniformly anchored in 3D N-GNS/CNTs carbon matrix and reacted with lithium ion efficiently. The electrochemical test results showed that this 3D composite structure can significantly improve the electrochemical performance of alpha-Fe2O3/GNS anode.