Preparation of Lithium Ion Battery Anode Materials from Precipitation Flotation Product

Abstract

The anode materials for lithium ion battery can be prepared from the heavy metal ion flotation product in the metal-containing wastewater. Porous Cu–Fe–metal organic frameworks (MOFs) were pyrolyzed and synthesized from precipitation flotation product in this study. When treated as a self-template by pyrolysis of Cu–Fe–MOFs at 750 °C for 1.0 h in an air atmosphere, the porous composite oxides containing CuFe2O4 and Fe2O3 were prepared and tested as anode materials for lithium ion batteries (LIBs). The electrochemical measurements demonstrated that the composite oxides released an initial discharge capacity of 1453.4 mAh g−1 at the current density of 100 mA g−1 and remain reversible capacity of 519.5 mAh g−1 after 50 cycles, together with superior cyclic stability and unique structure. The composite oxides can be seen as to be a promising anode material for LIBs. This work can realize the effective utilization of heavy metal resources from wastewater recycling.