Layered SnS2 cross-linked by carbon nanotubes as a high performance anode for sodium ion batteries†
Abstract
A SnS2@CNT nanocomposite as a high performance sodium-ion battery anode material is prepared via a facile sintering route. Benefiting from the high conductivity and strong mechanical properties of the CNTs, the SnS2@CNT with a unique nanostructure of 2D SnS2 sheets cross-linked by 1D CNTs, delivers a high reversible capacity of 758 mA h g−1 at 100 mA g−1 and an excellent cyclability with a capacity retention of 87% over 300 cycles. More impressively, over 445 mA h g−1 can be obtained at a high current density of 5 A g−1, demonstrating a superior rate capability.