Abstract
Transition metal disulfides have been widely used in lithium/sodium ion batteries as cathode materials. However, the huge structural changes in electrochemical processes remain a challenge. Here, 3DG-MoS2 hybrid nanomaterials with particular sandwich architecture were synthesized successfully by a simple evaporation and hydrothermal reaction method. This process enlarged the spacing between the graphene layers, increased the surface area, promoted electron and lithium/sodium ions diffusion, and alleviated structural deformations during ion insertion, which altogether improved the performance of lithium/sodium storage. Therefore, 3DG-MoS2 composite nanomaterials exhibited excellent cyclic stability electrochemical performance (955 mAhg−1 at 1 Ag−1 after 500 cycle for LIBs; 479 mA hg−1 at 1 Ag−1 after 300 cycle for SIBs). When the current density gradually reduced to 100 mAg−1, it still delivered excellent lithium/sodium storage capacity ability (1130 mAhg−1 for lithium storage; 663 mAhg−1 for sodium storage) even at 10 cycles of 2 Ag−1 deep charge and discharge.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call