Nanocomposite Anode Materials for Li-ion Batteries

Abstract

The Ag-Sn system has been studied as a promising alternative anode material for advanced Li-ion batteries. Some electrodes with suitable composition and nanostructure exhibit excellent cycleability, being capable of maintaining a reversible capacity of ∼200 mAh/g over 300 cycles. The study reveals that the substantially enhanced cycling performance of these anode materials can be attributed to nanosized microstructure, uniform distribution of structurally stable compound Ag₃Sn in Sn matrix as well as suitable Ag₃Sn/Sn ratio.