Effect of Ball: Weight Ratio on the Performance of LiFePO4/C Prepared by High Temperature Ball Milling Method

Abstract

LiFePO4/C cathode material for lithium-ion battery was synthesized with lithium dihydrogen phosphate, iron oxide, and glucose by the high temperature ball milling method. In an attempt to improve the electrochemical performance, the effect of ball: weight ratio was investigated in this paper. The results showed that the best electrochemical performance of LiFePO4/C was obtained from the test that was when ball: weight ratio was 10:1 synthesized ball-milling temperature at 650 ℃ for 8 h exhibited an excellent initial discharge capacity of 147.7mAh/g at a rate of 0.1C with small size and distributed uniformly. It shows the excellent electrochemical performance of the product prepared in this work.