Zn0.76Co0.24S Embedded in Multiwalled Carbon Nanotubes as Anode Material for Sodium-Ion Batteries
摘要
A composite anode composed of Zn0.76Co0.24S and multiwalled carbon nanotubes (Zn0.76Co0.24S/MWCNTs) was synthesized by hydrothermal vulcanization and its sodium storage performance was tested. Because of the synergistic effect between CNTs and Zn0.76Co0.24S, the Zn0.76Co0.24S/MWCNTs exhibited good sodium storage properties. After 40 cycles, the Zn0.76Co0.24S/MWCNT anode exhibited a high reversible specific capacity of 584.9 mAh g−1, while the Zn0.76Co0.24S electrode only provided a reversible specific capacity of 117.5 mAh g−1. Additionally, Zn0.76Co0.24S/MWCNTs exhibited an excellent rate performance (649.8 mAh g−1 at 0.1 A g−1, 376.6 mAh g−1 at 1 A g−1).