电子元件与材料2017，Vol.36Issue(7)：43-47,5.DOI:10.14106/j.cnki.1001-2028.2017.07.008
简单温和的置换途径制备锂离子电池纳米硅负极材料
Facile preparation of nanoscale silicon as anode materials for lithium ion batteries by a mild temperature metathesis route
阳海林 1梁逵 1杜建龙 1田凌云 1文晓峰1
作者信息
- 1. 湖南大学材料科学与工程学院,湖南长沙410082
- 折叠
摘要
Abstract
Silicon was regarded as one of the promising alternative anode materials for next-generation lithium ion batteries (LIBs) due to its high theoretical specific capacity of 3580 mAh · g-1 (Li3.75Si formed at room temperature).In this work,nanoscale silicon was synthesized via a simple and effective metathesis reaction,in which SiCl4 served as the silicon source and Zn as the reductant,respectively,at a mild temperature of 500 ℃.This method for producing nanoscale silicon is simple,facile and low-cost.The as-prepared silicon particles are spherical with a diameter of 150-200 nm and the delithiation specific capacity can attain as high as 1747.7 mAh g-1 at a current density of 0.2 A · g-1.Furthermore,Si/C composites are synthesized via a high temperature pyrolytic method with sucrose as the delithiation precursor and the capacity retention is 82.0％ after 50 cycles.关键词
纳米级硅/复合材料/温和的温度/置换反应/负极材料/锂离子电池Key words
nanoscale silicon/composite/mild temperature/metathesis reaction/anode materials/lithium ion batteries分类
信息技术与安全科学引用本文复制引用
阳海林,梁逵,杜建龙,田凌云,文晓峰..简单温和的置换途径制备锂离子电池纳米硅负极材料[J].电子元件与材料,2017,36(7):43-47,5.
