Lifepo4
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| Names | |
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IUPAC name
iron(2+) lithium phosphate (1:1:1)
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| Identifiers | |
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3D model (Jmol)
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| ChemSpider | |
| ECHA InfoCard | 100.124.705 |
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| Properties | |
| FeLiO 4P |
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| Molar mass | 157.757 |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
Lithium iron phosphate, also known as LFP, is an inorganic compound with the formula LiFePO
4. It is gray, red-grey, brown or black solid that is insoluble in water. The material has attracted attention as a candidate component of lithium iron phosphate batteries, which are related to Li-Ion batteries). It is targeted for use in power tools, electric vehicles, and solar energy installations. It is also used in OLPC XO education laptops.
Most lithium batteries (Li-ion) used in 3C (computer, communication, consumer electronics) products use cathodes of other lithium materials, 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 carbon.
Lithium iron phosphate exists naturally in the form of the mineral triphylite, but such material is insufficiently purity for use in batteries.
With general chemical formula of LiMPO
4, LiFePO
4 adopts the olivine structure. M includes not only Fe but also Co, Mn and Ti. The first commercial LiMPO
4 was C/LiFePO
4 and therefore, refer to the whole group of LiMPO
4 as lithium iron phosphate, LiFePO
4. However, more than one olivine-type phase may be used as a battery's cathode material. Olivine compounds such as A
yMPO
4, Li
1-xMFePO
4, and LiFePO
4-zM have the same crystal structures as LiMPO
4 and may replace in a cathode. All may be referred to as “LFP”.
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