Hierarchical Sb2S3/SnS2/C heterostructure with improved performance for sodium-ion batteries

Metal sulfides are promising anode materials for sodium-ion batteries (SIBs) because of their high theoretical capacities. However, they usually limited by poor cycling performance and rate properties due to large volume expansion sluggish reaction kinetics. Herein, Sb2S3/SnS2/C heterostructures were fabricated directly growing SnS2 nanoplates on Sb2S3 nanorods then coating surface with a carbon layer. Sodium-ion diffusion in several electrodes different electrolytes was further evaluated investigate the electrochemical heterostructures. Results revealed that greatly enhanced material stability promoted ion electron transport. Consequently, composites displayed reversible capacity 642 mA h g−1 at current density 1 A after 600 cycles good 367.3 4 NaPF6-diglyme electrolyte. Therefore, SIBs.