Confining tin sulfide nanosheets on nitrogen-doped porous carbon nanofibers for stable sodium storage

Tin monosulfide (SnS), recognized for its exceptional electrochemical properties, cost-effectiveness, and environmental sustainability, has emerged as a promising anode material for sodium-ion batteries. However, it suffers from significant volume expansion and limited electrical conductivity. Herein, an NC@SnS nanocomposite featuring SnS nanosheets directly grown on nitrogen-doped porous carbon fibers has been synthesized, showing a reversible capacity of 471 mAh g−1 at 1 A g−1 for sodium storage. The full cell containing Na3V2(PO4)3 and NC@SnS achieved a specific energy density of 114 Wh kg−1, highlighting its potential applicability for advanced electrochemical energy storage systems. The enhanced sodium storage performance indicates that the structural design of the composite material has a broad prospect for improving the application of electrode materials.