Lithium iron phosphate is introducedLithium ion batteries as a kind of high performance green twice The battery Volume, high voltage, high energy density (including energy and mass ratio), low self-discharge rate, use of wide temperature range, long cycle life, environmental protection, no memory effect, and can the advantages of large current charge and discharge To improve the performance of lithium ion batteries, to a large extent depends on to improve the performance of electrode materials, especially the anode material.