Abstract：Bismuth (Bi) owns high theoretical specific capacity and lower sodiation potential as an anode material for sodium-ion batteries (SIBs). However, there is serious volume expansion during the process of sodiation and desodiation, which leads to poor cycle stability. In order to improve the above problems, it is an effective way to composite Bi with porous carbon. In recent years, metal-organic frameworks (MOFs) as precursor, have been widely used in the synthesis of various metal oxides and porous carbon materials. In this paper, bismuth-containing MOF, CAU-17 was synthesized by solvothermal method as precursor, which was further applied to obtain Bi/C nanocomposites as anodes for SIBs. Meanwhile, the influence of calcination temperature to electrochemical performances was also investigated. The results show the samples calcined at 800°C is the best which delivers a specific discharge capacity of 211 mA h g-1 with competitive cycle performances.
2020, Vol. 27 