Tin-carbon composite submicron spheres constructed by molten salt synthesis and their high lithium storage performance

• Published in: Materials today communications 2024-03, Vol.38, p.108562, Article 108562
• Main Authors: Ren, Xuhui, Zhang, Fangcong, Fang, Tianyou, Zhang, Qian, Zhong, Shengwen, Yao, Wenli
• Format: Article
• Language: English
• Subjects: Anode material; Lithium storage property; Molten salt synthesis; Submicron spheres; Tin-carbon composite
• ISSN: 2352-4928; 2352-4928
• DOI: 10.1016/j.mtcomm.2024.108562

To effectively alleviate the severe agglomeration and huge volume expansion of tin oxides during charge and discharge processes, tin-carbon composite (SnOx@C-M) submicron spheres are constructed in this work using a molten salt-assisted method to improve their lithium storage performance. SnOx@C-M submicron spheres mainly comprises SnOx nuclei encapsulated by an amorphous carbon layer. The aggregation of SnOx nanoparticles can be enhanced by the surface carbon layer, allowing the significant volume expansion during cycling to be buffered. As expected, decent cycling stability and multiplicative properties were realized in the SnOx@C-M electrode material. Hence, this work is expected to provide a workable method to improve the performance of tin-carbon composites. [Display omitted] ●SnOx@C-M submicron spherical consisted of SnOx nuclei encapsulated by an amorphous carbon layer.●SnOx@C-M electrode exhibited excellent cycling performance and rate capability.●Synergistic effect of the submicron SnOx compound component and amorphous carbon layer on the properties.