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759546

Sigma-Aldrich

Lithium iron(II) phosphate

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powder, <5 μm particle size (BET), >97% (XRF)

Synonym(s):

Ferrous lithium phosphate, Iron lithium phosphate, LFP, Triphylite

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About This Item

Linear Formula:
LiFePO4
CAS Number:
15365-14-7
Molecular Weight:
157.76
UNSPSC Code:
26111700
NACRES:
NA.23

grade

battery grade

Assay

>97% (XRF)

form

powder

mol wt

Mw 157.76 g/mol

composition

LiFePO4

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Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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particle size

<5 μm (BET)

mp

>300 °C (lit.)

density

3.6 g/cm3 (lit.)

application(s)

battery manufacturing

greener alternative category

Enabling,

InChI

1S/Fe.Li.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q+2;+1;/p-3

InChI key

GELKBWJHTRAYNV-UHFFFAOYSA-K

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General description

Lithium iron(II) phosphate (LiFePO4), also called LFP, is a crystalline, grey-to-black powder with an olivine crystal structure. This unique structure facilitates efficient diffusion of lithium-ions, thanks to the three-dimensional interconnected iron phosphate tetrahedra that form pathways for lithium ions to diffuse. Additionally, the structure is highly stable, not deforming, even after thousands of cycles of lithium intercalation. Our LiFePO4 powder is manufactured to meet high purity with a tightly controlled particle size of less than 5 μm.
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Application

LiFePO4 is a widely used cathode for rechargeable Li batteries. It has high energy density, wide operating temperature, thermal stability, long cycle life and application life, environmental friendliness, and safety that make it a promising electrode material for greener and safer lithium-ion batteries.

Features and Benefits

LiFePO4-based batteries can last longer, operate safely and reliably, and power devices in a wide range of temperatures.
✔ Achieves 1000s of cycles
✔ Safer than cobalt or manganese-based cathode materials
✔ Reliable performance

Legal Information

Product of Engi-Mat Co.

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Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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P Subramanya Herle et al.
Nature materials, 3(3), 147-152 (2004-03-03)
The provision of efficient electron and ion transport is a critical issue in an exciting new group of materials based on lithium metal phosphates that are important as cathodes for lithium-ion batteries. Much interest centres on olivine-type LiFePO(4), the most
Kim, G. T.; et al.
Journal of Power Sources, 196, 2187-2187 (2011)
Low temperature hydrothermal synthesis of battery grade lithium iron phosphate
Benedek P, et al.
Royal Society of Chemistry Advances, 7(29), 17763-17767 (2017)
Byoungwoo Kang et al.
Nature, 458(7235), 190-193 (2009-03-13)
The storage of electrical energy at high charge and discharge rate is an important technology in today's society, and can enable hybrid and plug-in hybrid electric vehicles and provide back-up for wind and solar energy. It is typically believed that

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