Modification of lithium iron phosphate by metal ion and carbon

In order to improve the electrochemical performance of LiFePO4,the chemical co-precipitation method was used to synthesize LiFePO4 doped by metal ion and coated by carbon.The modified lithium iron phosphate has better performance,because doped metal ion and coated carbon can increase electrical conductivity of LiFePO4 and that between LiFePO4 particles.The reversible capacity of Li0.98Ti0.02FePO4/C is 126mAh/g at 320mA/g current,and their capacity retention is also above 96% after 20th cycles.