Synthesis of Li2FeSiO4/C composite cathode material for Li-ion batteries and influence of dispersion effect on electrochemical characteristics

In this work, a next generation of perspective cathode material for Li-ion batteries Li2FeSiO4/C composite was synthesized by the sol-gel method, followed by heat treatment. Glucose monohydrate was used as a reducing agent and a soot-forming additive. The influence of morphology and particle size on the electrochemical characteristics of the cathode material after grinding in a bead attritor are shown. Discharge capacity at current 0.1 C was equaled 137 mAhg−1, after 100 charge-discharge cycles the capacity was 112 mAhg−1. Cyclic voltamperometry was demonstrated better electrochemical reactions in Li2FeSiO4/C after additional shredding of initial materials, the specific capacitance of a sample during a discharge with currents of 0.5C, 1C, and 2C was also demonstrated.