Synthesis of Metal Oxides@C (Metal = Ni, Fe) Based Prussian Blue Analogs as a High-performance Anode Material for Lithium-ion Battery

Ni3[Fe(CN)6]2 nano-cubic precursors were prepared by chemical coprecipitation at room temperature with nickel acetate and potassium ferricyanide as raw materials. The corresponding NiFe2O4-NiO@C composites excellent crystallization two-stage oxidation low temperature. microstructure electrochemical behavior of the materials showed that Prussian blue analog was transformed into metal oxide while carbon coating maintained in existence reduces charge transfer impedance to 31.5 ?. At current density 500 mA/g, reversible capacity 632.7 mAh/g is after cycles. same time, cladding can also enhance role pseudocapacitance material. scanning rate 0.1 mV/s, account for 54.4% total discharge capacity, which significantly higher than uncoated