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449903

Sigma-Aldrich

Lithium fluoride

≥99.99% trace metals basis

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Synonym(s):
Fluorolithium
Linear Formula:
LiF
CAS Number:
Molecular Weight:
25.94
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

grade

anhydrous

Quality Level

Assay

≥99.99% trace metals basis

form

powder and chunks

impurities

≤100.0 ppm Trace Metal Analysis

bp

1673 °C/1 atm (lit.)

mp

845 °C (lit.)

solubility

aqueous acid: slightly soluble(lit.)

density

2.64 g/mL at 25 °C (lit.)

SMILES string

[Li+].[F-]

InChI

1S/FH.Li/h1H;/q;+1/p-1

InChI key

PQXKHYXIUOZZFA-UHFFFAOYSA-M

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This Item
237965932310669431
Lithium fluoride ≥99.99% trace metals basis

Sigma-Aldrich

449903

Lithium fluoride

Lithium fluoride powder, -300 mesh

Sigma-Aldrich

237965

Lithium fluoride

Lithium fluoride

Sigma-Aldrich

932310

Lithium fluoride

Lithium fluoride Precipitated, 99.995%

Sigma-Aldrich

669431

Lithium fluoride

assay

≥99.99% trace metals basis

assay

-

assay

≥99%

assay

99.995%

form

powder and chunks

form

powder

form

-

form

powder

impurities

≤100.0 ppm Trace Metal Analysis

impurities

-

impurities

-

impurities

≤55.0 ppm Trace Metal Analysis

mp

845 °C (lit.)

mp

845 °C (lit.)

mp

845 °C (lit.)

mp

845 °C (lit.)

solubility

aqueous acid: slightly soluble(lit.)

solubility

-

solubility

H2O: 2.9 g/L

solubility

-

General description

Lithium fluoride is a white crystalline solid with a high melting point. It is widely applied in the field of rechargeable batteries, storage devices, and thermoluminescent materials. LiF is also used as a coupling layer in OLED or PLED devices to enhance electron injection. On the other hand, it is preferred for optical applications due to its wide band gap, which allows it to transmit light efficiently.

Application

Lithium fluoride can be used:
  • As an additive to fabricate SiO@C/graphite composite anode materials for Li-ion batteries. LiF stabilizes solid electrolyte interphase (SEI) and enhances initial coulombic efficiency.
  • As a critical component in SEI for stabilizing the SEI layer and improving the cycling efficiency of Li metal batteries.
  • To fabricate electron contacts for high-efficiency n-type crystalline silicon solar cells.
  • To prepare solid-state light sources for radiation imaging detectors.
  • To synthesize highly crystalline MXene for asymmetric supercapacitor applications. And also, lightweight, flexible, and hydrophobic MXene foam with reasonable strength, high electrical conductivity, and an outstanding EMI-shielding performance.
  • As an electron-injection layer to fabricate ITO/PEDOT:PSS/perovskite/B3PYMPM/ LiF/Al OLED device with a quantum efficiency of 20%.

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Supplementary Hazards

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Radiat. Prot. Dosim., 66, 423-423 (1996)
A growing appreciation for the role of LiF in the solid electrolyte interphase
Jian Tan, et al.
Advanced Energy Materials, 11, 2100046-2100046 (2021)
Lithium fluoride based electron contacts for high efficiency n-type crystalline silicon solar cells
James Bullock, et al
Advanced Energy Materials, 6, 1600241-1600241 (2016)
Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent
Kebin Lin, et al.
Nature, 562, 245-248 (2018)
Photoluminescence of colour centres in lithium fluoride thin films: from solid-state miniaturised light sources to novel radiation imaging detectors
R M Montereali, et al.
Journal of Luminescence, 170, 761-769 (2016)

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Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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