Electrochemical Characteristics and Intercalation Mechanism of Manganese Carbonate as Anode Material for Lithium-Ion Batteries

In this paper, manganese carbonate is used as a lithium storage material for lithium-ion batteries. The electrochemical properties of manganese carbonate are studied by cyclic voltammetry and galvanostatic charge-discharge technique. The electrochemical results show that manganese carbonate has a high initial capacity of 1534.6 mAh.g-1. By using ex-situ infrared method and ex-situ X-ray diffraction technique, the electrochemical reaction mechanism of manganese carbonate with lithium is a reversible conversion between Mn2+ and Mn0. The electrochemical reaction between lithium and manganese carbonate can lead to the formation of manganese metal and lithium carbonate. In the reverse charge process, manganese metal and lithium carbonate can return back to lithium and manganese carbonate. Therefore, it is expected that manganese carbonate can be a promising anode material for lithium-ion batteries.