中空杆状 C/WS2 复合材料的制备及其储钠性能研究.

Tungsten disulfide has become a very potential anode material for sodium ion batteries because of its unique layered structure and large interlayer spacing. However, its further wide application is limited by its poor conductivity and easy volume expansion during charging and discharging. In this paper, using tungsten hexachloride, thioacetamide and self-made hollow carbon shell as raw materials, a hollow rod-shaped C/WS2 composite material was synthesized by solvothermal method, and it was used in sodium ion battery to improve the above problems. The results show that the specific capacity of C/WS2, electrode can still reach 417. 1 mAh g-1 after 90 cycles at the current density of 2 A g-1. Under the high current density of 10.0 A g-1, it also has a specific capacity of 343. 3 mAh g-1. Therefore, the hollow rod-shaped C/WS2, composite material has excellent sodium storage performance. [ABSTRACT FROM AUTHOR]