The Effect on Electrochemical Properties of Co on Al-Si-Fe Alloys for Anode Material of Lithium-Ion Batteries

Abstract

Abstract-Due to its high theoretical capacity of 4200 mA h g -1 , silicon has great interest for the alternative anode material for lithium-ion batteries. However, insufficient cycle performance come from a large volumetric change during cycling, seriously restrict its practical use. Nano-structured alloys included silicon have potential for anode materials such as Al-Si alloys. The effect of Co on high energy ball milled Al-Si-Fe alloy in the condition of repeated charging and discharging capacity measurement has been demonstrated. Improved cycle capacity of alloy has been obtained by Co addition.