Synthesis and Study of the Electrochemical Properties of Manganese Hexacyanoferrate as a Cathode Material for Na-Ion Batteries

Manganese hexacyanoferrate was synthesized by the hydrothermal method and its cubic structure was established. Manganese hexacyanoferrate powder was studied in the composition of a cathode material for sodium-ion batteries with an electronically conductive carbon black additive and a polyvinylidene fluoride binder polymer. The electrochemical properties of manganese hexacyanoferrate-based electrodes in a propylene carbonate solution of sodium perchlorate were investigated by the cyclic voltammetry and charge-discharge curves. The specific capacities of the cathode material and their dependence on the current density were found. The stability of the capacitive characteristics of the material was studied during long-term charge-discharge cycling.