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934771

Sigma-Aldrich

Lithium iron phosphate

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electrode sheet, aluminum substrate, size 5 in. × 10 in.

Synonym(s):

LFP electrode

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About This Item

Empirical Formula (Hill Notation):
LiFePO4
Molecular Weight:
157.76
UNSPSC Code:
26111700
NACRES:
NA.21

material

aluminum substrate (current collector)

Quality Level

grade

battery grade

description

Capacity: >= 170 mAh/g
Description/Nominal Voltage: 3.2 V vs. Li/Li+

Assay

≥98% (active material characteristic)

composition

Active material loading 7.3 mg/cm2 ± 5%, ≥85%

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Design for Energy Efficiency
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sustainability

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size

16 μm , aluminum current collector
5 in. × 10 in.

thickness

70 μm ± 5% , excluding current collector

pore size

~2 μm particle size (active material characteristic)

capacity

≥170 mAh/g (Nominal)

application(s)

battery manufacturing

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General description

Our lithium iron phosphate (LFP) electrode sheet is a ready-to-use cathode for lithium-ion battery research. The LFP cathode film is cast 70 µm thick, single-sided, on a 16 µm thick aluminum foil current collector that is 5 × 10 inches (127 mm × 254 mm) in size. The composition is 88% lithium iron phosphate (LFP), 4% Poly(vinylidene fluoride) [PVDF] and 8% carbon black. The active material, olivine LiFePO4, is a well-studied cathode material, known for its excellent cycling stability.
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Application

The primary application of our lithium iron phosphate (LFP) electrode is as a cathode in lithium-ion battery research. LFP is inexpensive, nontoxic, cobalt-free, and environmentally benign. It achieves high specific capacity (>150 mAh/g) and offers a considerably longer cycle life than other lithium-ion chemistries. LFP cells experience a slower rate of capacity loss and greater calendar-life than lithium-ion battery chemistries such as cobalt (LiCoO2), manganese spinel (LiMn2O4), lithium-ion polymer batteries (LiPo battery), and nickel-based lithium-ion cathodes. Because of its low-cost, low-toxicity, long-term stability, and well-defined performance, LFP-based batteries are finding roles in vehicle use and backup power applications.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Degradation of Commercial Lithium-Ion Cells as a Function of Chemistry and Cycling Conditions
Preger Y, et al.
Journal of the Electrochemical Society, 167, 120532-120532 (2020)
Phospho-olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries
Padhi A K, et al.
Journal of the Electrochemical Society, 144, 1188-1194 (1997)
Chemical State of Iron of LiFePO4 during Charge-Discharge Cycles Studied by In-Situ X-ray Absorption Spectroscopy
Inoue K, et al.
Materials Transactions, 51, 2220-2224 (2010)

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