Lithium iron phosphate

Lithium iron phosphate or lithium ferro-phosphate (LFP) is an inorganic compound with the formula LiFePO
4. It is a gray, red-grey, brown or black solid that is insoluble in water. The material has attracted attention as a component of lithium iron phosphate batteries, a type of Li-ion battery. This battery chemistry is targeted for use in power tools, electric vehicles, solar energy installations and more recently large grid-scale energy storage.

Lithium iron phosphate
Names
IUPAC name
iron(2+) lithium phosphate (1:1:1)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.124.705
EC Number
  • 604-917-2
  • InChI=1S/Fe.Li.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q+2;+1;/p-3 Y
    Key: GELKBWJHTRAYNV-UHFFFAOYSA-K Y
  • InChI=1S/Fe.Li.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q+2;+1;/p-3
  • Key: GELKBWJHTRAYNV-UHFFFAOYSA-K
  • [Fe+2].[Li+].[O-]P([O-])([O-])=O
Properties
FeLiO
4P
Molar mass 157.757
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Most lithium batteries (Li-ion) used in consumer electronics products use cathodes made of lithium compounds such as lithium cobalt oxide (LiCoO
2), lithium manganese oxide (LiMn
2O
4), and lithium nickel oxide (LiNiO
2). The anodes are generally made of graphite.

Lithium iron phosphate exists naturally in the form of the mineral triphylite, but this material has insufficient purity for use in batteries.

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