合成具有增强储锂性能的微尺度 SnO2@碳空心球。

Synthesis of micro-sized SnO2@carbon hollow spheres with enhanced lithium storage properties.

机构信息

MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and Department of Applied Chemistry, School of Sciences, Xi'an Jiaotong University, Xi'an, PR China 710049.

出版信息

Nanoscale. 2012 Jun 21;4(12):3651-4. doi: 10.1039/c2nr30841j. Epub 2012 May 21.

DOI:10.1039/c2nr30841j

PMID:22609969

Abstract

Uniform and stable micro-sized SnO(2) hollow spheres are prepared by templating against polystyrene microspheres. After being coated with a thin layer of amorphous carbon, the as-obtained SnO(2)@carbon hollow microspheres are shown to exhibit improved lithium storage properties, delivering a reversible capacity of 570 mA h g(-1) after 50 cycles at a high current density of 400 mA g(-1).

摘要

通过在聚苯乙烯微球上进行模板化反应，制备了均匀稳定的微尺寸 SnO(2)空心球。在经过一层薄薄的无定形碳包覆后，所得到的 SnO(2)@碳空心微球表现出了改进的锂存储性能，在 400 mA g(-1)的高电流密度下经过 50 次循环后，可逆容量达到 570 mA h g(-1)。