Research progress in lithium iron phosphate cathode materials for lithium-ion batteries
Lithium-ion batteries as the optimal power source for electric vehicles have attracted much attention.Lithium iron phosphate(LiFePO4)has become one of the most promising cathode materials for lithium-ion batteries due to its stable charging-discharge performance,wide source,high specific capacity and green environment.Based on the review of crystal structure,preparation method and performance of LiFePO4 as a positive electrode material,two modification methods—surface coating and ion doping were analyzed.Based on the summary of the advantages and limitations of LiFePO4,the future research focus and development trend of LiFePO4 are prospected.
Lithium iron batteryLiFePO4Surface coatingIon doping