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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

Quality Level

100

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.)

greener alternative category

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

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Radiat. Prot. Dosim., 66, 101-101 (1996)
Improving the electrochemical properties of a SiO@C/graphite composite anode for high-energy lithium-ion batteries by adding lithium fluoride
Mao Xia, et al.
Applied Surface Science, 480, 410-418 (2019)
A safe etching route to synthesize highly crystalline Nb2CTx MXene for high performance asymmetric supercapacitor applications
Junpeng Xiao, et al.
Electrochimica Acta, 337, 135803-135803 (2020)
A growing appreciation for the role of LiF in the solid electrolyte interphase
Jian Tan, et al.
Advanced Energy Materials, 11, 2100046-2100046 (2021)
Radiat. Prot. Dosim., 66, 423-423 (1996)
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