Electrochemical investigation of sodium reactivity with nanostructured Co3O4 for sodium-ion batteries

Abstract

The electrochemical behaviour of Co₃O₄ with sodium is reported here. Upon cycling in the voltage window of 0.01–3.0 V, Co₃O₄ undergoes a conversion reaction and exhibits a reversible capacity of 447 mA h g⁻¹ after 50 cycles. Therefore, nanostructured Co₃O₄ presents feasible electrochemical sodium storage, offering possibilities to develop new anode materials for sodium-ion batteries.