A novel and fast method to prepare a Cu-supported α-SbS@CuSbS binder-free electrode for sodium-ion batteries.

Antimony sulfide (SbS) is a promising anode material for sodium-ion batteries due to its low cost and high theoretical specific capacity. However, poor stability and a complex preparation process limit its large-scale application. Herein, we prepare a binder-free composite electrode composed of amorphous (α-) SbS and copper antimony sulfide (CuSbS) through a simple closed-space sublimation (CSS) method.