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449903

Sigma-Aldrich

Lithium fluoride

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≥99.99% trace metals basis

Synonym(s):

Fluorolithium

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About This Item

Linear Formula:
LiF
CAS Number:
7789-24-4
Molecular Weight:
25.94
EC Number:
232-152-0
MDL number:
MFCD00011090
UNSPSC Code:
12352302
PubChem Substance ID:
24868518
NACRES:
NA.23

grade

anhydrous

Assay

≥99.99% trace metals basis

form

powder and chunks

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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.)

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SMILES string

[Li+].[F-]

InChI

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

InChI key

PQXKHYXIUOZZFA-UHFFFAOYSA-M

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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.
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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
GHS06

Signal Word

Danger

Hazard Statements

H301,H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Supplementary Hazards

EUH032

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)
Radiat. Prot. Dosim., 66, 101-101 (1996)
Zeinab Safari et al.
Nanomaterials (Basel, Switzerland), 9(11) (2019-11-21)
The performances of organometallic halide perovskite-based solar cells severely depend on the device architecture and the interface between each layer included in the device stack. In particular, the interface between the charge transporting layer and the perovskite film is crucial
Eur. J. Solid State Inorg. Chem., 33, 809-809 (1996)
R Takam et al.
Radiation protection dosimetry, 150(1), 22-33 (2011-08-30)
(6)LiF:Mg,Cu,P and (7)LiF:Mg,Cu,P glass-rod thermoluminescent dosemeters (TLDs) were used for measurements of out-of-field photon and neutron doses produced by Varian iX linear accelerator. Both TLDs were calibrated using 18-MV X-ray beam to investigate their dose-response sensitivity and linearity. CR-39 etch-track
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