锂离子电池用高容量合金类硅基负极材料研究进展

Research Progress of High Capacity Si Based Anode Material for Li-Ion Battery

锡、硅负极材料由于具有高的比容量等优点,成为提高锂离子电池能量密度的首选负极材料。首先介绍了目前产业界开发锡、硅负极材料的进展,并从商业化的角度比较了这两类材料在开发工艺及实际使用电性能方面的区别。进一步从基础研发角度重点阐述了不同结构的硅基材料(单质硅、硅氧化物、硅碳复合物及硅合金)的电性能改性研究进展,指出了具有工业化前景的工艺方法。

Tin and Silicon-based compounds are the research focuses of high capacity anode material for lithium ion batteries. The research progress of Si ＆ Sn materials is introduced, and their process development from commercial perspective is also compared. The electrochemical behaviors modification progresses of Si materials, which are crystal silicon, silicon oxygen compound, Si/C composite and silicon alloy, have been reported. The process route which is fit for industrialization has been provided.