Synthesis and Electrochemical Properties of Lithium-Ion Battery Cathode Materials Based on LiFePO4–LiMn2O4 and LiFePO4–LiNi0.82Co0.18O2 Composites

Abstract

Composites based on electrochemically active components, LiFePO₄, LiMn₂O₄ and LiNi_0.82Co_0.18O₂, for the use as cathode materials for lithium-ion batteries were synthesized using ultrasonic treatment. The effects of the sonication mode (series LiFePO₄–LiMn₂O₄) and component ratio (series LiFePO₄–LiNi_0.82Co_0.18O₂) on the electrochemical performance of the resulting composites were studied. The obtained composites were examined by scanning electron microscopy and powder X-ray diffraction and tested in coin-type cells with lithium anode. Positive electrodes based on the obtained composites showed enhanced electrochemical performance.