A highly Meso@Microporous carbon-supported Antimony sulfide nanoparticles coated by conductive polymer for high-performance lithium and sodium ion batteries

摘要: Abstract A novel multi-step method that combines solvothermal, sulfidation and polymerization process was utilized to synthesize Antimony Sulfide/Meso@Microporous Carbon nanofibers@polypyrrole (Sb2S3/MMCN@ppy) composite. As the host, MMCN is full of microporous mesoporous naturally, which can prevent aggregation during accelerate transfer electron inside whole Meanwhile, effective coverage ppy layer accommodate volume changes cycling fast on surface Combining those merits, dual physical barrier composed conductive guarantees ultrastable structure for superior electrochemical performance. When used as an anode lithium-ion batteries, Sb2S3/MMCN@ppy composite demonstrates stable performance with enhanced lithium-storage capability. Impressively, even at high current density 1000 mA g−1, a specific reversible capacity about 556 mA h g−1 be delivered after 300 long cycles. In addition, also displays outstanding stability sodium-storage property in sodium-ion batteries (269 mAh g−1 1000 mA g−1 cycles). The results show this product may considered promising material advanced LIBs SIBs.