High capacity Na-storage and superior cyclability of nanocomposite Sb/C anode for Na-ion batteries

Abstract

A Sb/C nanocomposite was synthesized and found to deliver a reversible 3 Na storage capacity of 610 mA h g⁻¹, a strong rate capability at a very high current of 2000 mA g⁻¹ and a long-term cycling stability with 94% capacity retention over 100 cycles, offering practical feasibility as a high capacity and cycling-stable anode for room temperature Na-ion batteries.