Research progress of the tap density of lithium iron phosphate

Lithium iron phosphate is expected to be one of the preferred cathode materials for the new generation of lithium ion batteries because of its low material cost,high thermal stability,satisfactory cycle stability,and low toxicity.At present,the shortcomings of lithium iron phosphate such as low electronic conductivity and ion diffusion rate of lithium iron phosphate are studied very deeply.However,the low tap density of lithium iron phosphate has not received enough attention.The researches of the tap density of lithium iron phosphate are reviewed at home and abroad in recent years,and the effects of morphology,particle size and distribution,carbon coating and metal doping on the tap density of lithium iron phosphate are introduced,and several methods to synthesize lithium iron phosphate with high tap density are concluded.