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449903

Sigma-Aldrich

Lithium fluoride

greener alternative

≥99.99% trace metals basis

Synonym(s):

Fluorolithium

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About This Item

Linear Formula:
LiF
CAS Number:
Molecular Weight:
25.94
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23

grade

anhydrous

Assay

≥99.99% trace metals basis

form

powder and chunks

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sustainability

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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

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent
Kebin Lin, et al.
Nature, 562, 245-248 (2018)
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)
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)

Articles

Professor Gogotsi and Dr. Shuck introduce MXenes: a promising family of two-dimensional materials with a unique combination of high conductivity, hydrophilicity, and extensive tunability.

Professor Gogotsi and Dr. Shuck introduce MXenes: a promising family of two-dimensional materials with a unique combination of high conductivity, hydrophilicity, and extensive tunability.

Professor Gogotsi and Dr. Shuck introduce MXenes: a promising family of two-dimensional materials with a unique combination of high conductivity, hydrophilicity, and extensive tunability.

Professor Gogotsi and Dr. Shuck introduce MXenes: a promising family of two-dimensional materials with a unique combination of high conductivity, hydrophilicity, and extensive tunability.

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