Study on the Performance of MnFe₂O₄ as Anode Material for Lithium-Ion Batteries Using Spent Alkaline Zn-Mn Batteries as Manganese Source

摘要

In this work, we report the electrochemical properties of MnFe2O4 as anode materials for lithium-ion batteries using spent Zn-Mn batteries as raw materials by three different methods: sol-gel method, hydrothermal method in glycol and hydrothermal method in water. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), particle size analysis and charge- discharge test. The result showed that the material synthesized by hydrothermal in water shows the best cycle performance of all, the initial discharge specific capacity of MnFe2O4 prepared by this -1 process was 1096 mA h g . Moreover, even after 100 cycles, the MnFe2O4 electrode remains 150 mA -1 h g . These results of this investigation demonstrate that the process MnFe2O4 prepared by using the spent Zn-Mn batteries as manganese source presents an alternative way for spent alkaline Zn-Mn batteries recycling.