Current research status on the structural properties and modification of LiFePO4 cathode materials

With the current global economy developing at a rapid pace, research into lithium-ion batteries has become a focal point in many major areas. Lithium iron phosphate, also known as LiFePO4 or LFP, is one of the most promising cathode materials for commercial lithium batteries. Its advantages include low cost, environmental friendliness, long cycle life, good thermal stability, and more. Its high-rate charge–discharge capability is limited by its low electronic conductivity and lithium ion diffusion coefficient. Thus, this work describes the structural features of LiFePO4 cathode materials, focuses on their modification (coating, ion doping, morphological control methods), and concludes by anticipating the direction of future research in this field.