Topochemically synthesized NbVS as a stable anode for sodium-ion batteries.

Ternary metal sulfides having layered morphology are considered as potential active materials for various applications. Herein, NbVS is synthesized topochemically for the first time using a Nb-V-HDA complex having a lamellar structure by employing HS gas as the sulfidation agent. NbVS, as an anode for SIBs, exhibited a specific capacity of 101.15 mA h g at 0.5 A g, along with excellent cycling stability with 100% capacity retention after 2500 cycles.