A scalable ball milling strategy to endow SnS anode electrodes with free volume property for enhanced electrochemical performance. (3rd May 2022)

• Record Type: Journal Article
• Authors: Guan, Huibin; Feng, Dong; Liu, Qi; Zeng, Tianbiao
• Is Part Of: New journal of chemistry. Volume 46:Number 19(2022)
• Page Start: 9432
• Page End: 9439
• Publication Date: 2022-05-03
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj01221a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : SnS/G- x % anode with free volume has been fabricated by a scalable ball milling technology. The free volume effectively relief the volume expansion/shrinkage SnS, an optimized electrochemical performance is being made at graphite content of 15 wt%. Abstract : Among the tin-based composites, stannous sulfide (SnS) is a prospective material to serve as an anode for lithium-ion batteries (LiBs) owing to its high theoretical-capacity, layer-structure for fast Li + diffusion paths, and low toxicity. However, severe volume expansion/shrinkage exfoliates the electrode coating, leading to the severe loss of active materials. Herein, free volume was introduced into SnS to relieve the sequelae of volume expansion/shrinkage creatively, which effectively improved the cyclability of the SnS-based anode. The as-synthesized SnS/G-15% exhibited overall optimal electrochemical performances, i.e., the highest reversible capacity and best cyclability over pure SnS, SnS/G-5% and SnS/G-25%. Ex situ scanning electron microscopy images also illustrated that no cracks were generated in the cycled SnS/G-15% electrode. This work highlights an efficient and cost effective approach for the synthesis of long-cycle life and high-cyclability anodes.