 It is generally believed the high voltage activation step induces various cation defects that on cycling equilibrate through the lithium-layer sites to a lower energy state that exhibits a lower cell voltage but with a similar capacity.LiFePO4 is a 3.6V lithium-ion battery cathode initially reported by John Goodenough and is structurally related to the mineral olivine and consists of a three dimensional lattice of an [FePO4] framework surrounding a lithium cation.The lithium cation sits in a one dimensional channel along the [010] axis of the crystal structure.