▎ 摘　　要

This work describes the preparation of an acid-treated reduced graphene oxide/Mn3O4 nanorod (ArGO/Mn3O4 NR) nanocomposite using a simple mixing and heat treatment of acid-treated graphene oxide (AGO) and MnOOH nanorods (MnOOH NRs). The as-prepared ArGO/Mn3O4 NR sample shows a higher performance as an anode material than bare Mn3O4 nanorods (Mn3O4 NRs) and reduced graphene oxide/Mn3O4 nanorods (rGO/Mn3O4 NR) in Li-ion batteries (LIBs). The electrochemical performance reveals that the ArGO/Mn3O4 NR electrode retains a higher reversible capacity of 749 mA h g(-1) after 100 cycles at a current density of 200 mA g(-1). In addition, the electrode mixed with ArGO delivers a stable capacity of 412 mA h g(-1) at a high current density of 2000 mA g(-1) while bare Mn3O4 NR and rGO/Mn3O4 NR deliver 173 and 318 mA h g(-1), respectively. With the advantages of facile preparation and improved electrochemical properties, the ArGO/Mn3O4 NR electrode can be a promising candidate as a high-performance anode material for LIBs.