Is lithium iron phosphate a suitable cathode material for lithium ion batteries?

Since its first introduction by Goodenough and co-workers, lithium iron phosphate (LiFePO 4, LFP) became one of the most relevant cathode materials for Li-ion batteries and is also a promising candidate for future all solid-state lithium metal batteries.

What is a lithium ion battery?

Lithium-ion batteries have gradually become mainstream in electric vehicle power batteries due to their excellent energy density, rate performance, and cycle life. At present, the most widely used cathode materials for power batteries are lithium iron phosphate (LFP) and Li x Ni y Mn z Co 1−y−z O 2 cathodes (NCM).

What is lithium iron phosphate (LiFePO4)?

N.Š., I.H., and D.K. wrote the manuscript with the contribution from all the authors. Abstract Lithium iron phosphate (LiFePO4, LFP) serves as a crucial active material in Li-ion batteries due to its excellent cycle life, safety, eco-friendliness, and high-rate performance.

How does NCM phase transition affect battery safety?

In addition, NCM phase transition often occurs in the surface layer of the particles, accompanied by the release of oxygen atoms. The released oxygen may react with the electrolyte to produce a large amount of heat and gas, which further deteriorates battery safety.

What are the cathode materials of lithium ion batteries?

The cathode materials of LIBs include LFP, NCM, lithium cobaltate (LCO), and lithium manganate (LMO) etc. As shown in Table 1, LFP shows extremely high cycle life and a stable voltage platform, which can effectively reduce battery weight and ensure the acceleration ability of electric vehicles.

Which cathode materials are used for power batteries?

At present, the most widely used cathode materials for power batteries are lithium iron phosphate (LFP) and Li x Ni y Mn z Co 1−y−z O 2 cathodes (NCM). However, these materials exhibit bottlenecks that limit the improvement and promotion of power battery performance.