Hierarchical MoSe₂ Nanosheets/Reduced Graphene Oxide Composites as Anodes for Lithium‐Ion and Sodium‐Ion Batteries with Enhanced Electrochemical Performance

Abstract The preparation and electrochemical storage behavior of hierarchical MoSe₂/reduced graphene oxide (rGO) composites were studied. The preparation was achieved by a facile hydrothermal route. The results show that MoSe₂ has a high capacity for lithium ion and sodium ion storage and that the incorporation of rGO has further improved the electrochemical property of MoSe₂ effectively. As anode materials for lithium‐ion and sodium‐ion batteries, the MoSe₂/rGO composites demonstrate excellent rate performance and cycling stability of 917 mA h g⁻¹ after 100 cycles for Li⁺ storage and 430 mA h g⁻¹ after 200 cycles for Na⁺ storage at a current density of 0.5 A g⁻¹, which is attributed to the robust hierarchical structure and the synergistic effects between MoSe₂ nanosheets and rGO. Therefore, the electrochemical evaluations suggest that the obtained hierarchical structure MoSe₂/rGO composites hold great potential as anode materials for lithium‐ion and sodium‐ion batteries.