期刊
RSC ADVANCES
卷 6, 期 98, 页码 95805-95811出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra19353f
关键词
-
资金
- National NSFC [51231003, 21673243]
- MOE [B12015, IRT13R30]
- Fundamental Research Funds for the Central Universities
In this article, we report on the preparation of ultrasmall SnS nanoparticles embedded in carbon spheres (called SnS/C nanocomposite) by one pot aerosol spray pyrolysis and its application as a high-rate and long-cycle life anode material for sodium-ion batteries. The structure and morphology analysis of the as-prepared nanocomposite shows that SnS nanoparticles with a size about 5 nm are homogeneously dispersed in the carbon spheres (denoted as 5-SnS/C). The sizes and components of SnS particles can be controlled by adjusting the precursor's concentration. When applied as an anode material of sodium-ion batteries, the 5-SnS/C nanocomposite delivers an initial charge capacity of 560.8 mA h g(-1) at 1 A g(-1) and maintains a reversible capacity of 517.6 mA h g(-1) after 200 cycles at 1 A g(-1). In particular, the 5-SnS/C electrode exhibits a high-rate capability, with reversible capacities of 428.5 mA h g(-1) at 3 A g(-1) and 315.4 mA h g(-1) at 5 A g(-1), respectively. The excellent electrochemical performance of 5-SnS/C is due to the fact that the uniformly embedded similar to 5 nm SnS nanoparticles in the stable carbon matrix can alleviate the volume expansion during cycling with a buffering effect to prevent aggregation of SnS nanoparticles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据