Synthesis of NiFe2O4 with different precipitation agents for Li-ion battery anode material by co-precipitation

NiFe 2 O 4 anode materials are prepared by chemical co-precipitation method using Na 2 CO 3 , NaOH, and Na 2 C 2 O 4 as precipitants, respectively, and PEG 20000 as dispersants. Through various characterization methods, the structure, morphology, and electrochemical properties of NiFe 2 O 4 materials prepared with different precipitants are studied. By comparison, it is found that the NiFe 2 O 4 prepared with Na 2 C 2 O 4 as the precipitant has a porous sheet-like structure with good dispersibility. In addition, the capacity remains at 502.3 mAh·g −1 and after 100 cycles at 100 mA·g −1 . At high current densities of 400 and 1000 mA·g −1 , the discharge capacities after 100 cycles are 462.7 and 401.1 mAh·g −1 . Additionally, cyclic voltammetry (CV) tests show that the NiFe 2 O 4 de/lithium intercalation process is stable and reversible.