Metal organic framework derived SnS@C composites for efficient sodium storage

Abstract

Tin monosulfide (SnS) has received extensive attention as a promising anode material toward sodium storage for its high specific capacity. Herein, we reported a simple and facile vulcanization reaction to synthesize SnS particles dispersed into carbonaceous mesoporous frameworks using Sn-based MOFs as the precursor template. The unique structure of SnS@C improves electrical conductivity of SnS and promotes the electrons transfer. The as-prepared SnS@C-500 composite displays superior sodium storage performance, which exhibits a high specific capacity of 510 mAh g−1 over 200 cycles at the current density of 0.5 ​A ​g−1, as well as superior rate capabilities. The current MOF-derived synthesis method offers a simple and effective apporach to synthesis in situ SnS/carbonaceous composites electrode materials.