Electrochemical investigation of sodium reactivity with nanostructured Co_3O_4 for sodium-ion batteries

摘要

The electrochemical behaviour of Co_3O_4 with sodium is reported here. Upon cycling in the voltage window of 0.01-3.0 V, Co_3O_4 undergoes a conversion reaction and exhibits a reversible capacity of 447 mA h g~(-1) after 50 cycles. Therefore, nanostructured Co_3O_4 presents feasible electrochemical sodium storage, offering possibilities to develop new anode materials for sodium-ion batteries.