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449903

Lithium fluoride

greener alternative

≥99.99% trace metals basis

Synonym(s):

Fluorolithium

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$129.00

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$364.00

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$1,180.00

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About This Item

Linear Formula:
LiF
CAS Number:
Molecular Weight:
25.94
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
232-152-0
MDL number:
Assay:
≥99.99% trace metals basis
Form:
powder and chunks
Solubility:
aqueous acid: slightly soluble(lit.)

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Product Name

Lithium fluoride, ≥99.99% trace metals basis

InChI key

PQXKHYXIUOZZFA-UHFFFAOYSA-M

InChI

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

SMILES string

[Li+].[F-]

assay

≥99.99% trace metals basis

form

powder and chunks

reaction suitability

core: lithium

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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.)

application(s)

battery precursors
catalysts
material synthesis precursor

greener alternative category

Quality Level

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1 of 4

This Item
2036452379651.05686
form

powder and chunks

form

powder

form

powder

form

solid

assay

≥99.99% trace metals basis

assay

≥99.98% trace metals basis

assay

-

assay

99.99%

solubility

aqueous acid: slightly soluble(lit.)

solubility

aqueous acid: slightly soluble(lit.)

solubility

-

solubility

-

Quality Level

100

Quality Level

100

Quality Level

200

Quality Level

100

grade

anhydrous

grade

-

grade

-

grade

for inorganic trace analysis

impurities

≤100.0 ppm Trace Metal Analysis

impurities

≤200.0 ppm Trace Metal Analysis

impurities

-

impurities

-

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.[1]
  • As a critical component in SEI for stabilizing the SEI layer and improving the cycling efficiency of Li metal batteries.[2]
  • To fabricate electron contacts for high-efficiency n-type crystalline silicon solar cells.[3]
  • To prepare solid-state light sources for radiation imaging detectors.[4]
  • 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.[5]
  • As an electron-injection layer to fabricate ITO/PEDOT:PSS/perovskite/B3PYMPM/ LiF/Al OLED device with a quantum efficiency of 20%.[6]

Features and Benefits

  • High purity in lithium fluoride is vital for the best performance and lifespan of lithium-ion batteries, helping to reduce degradation from metal impurities.
  • The presence of metal impurities such as calcium, sodium, and iron at levels below 10 ppm helps maintain optimal battery performance .
  • High purity lithium fluoride enhances electrochemical efficiency by ensuring optimal ionic conductivity, minimizes side reactions that degrade battery materials, contributes to stable electrolyte formulations for improved longevity and cycle life, and reduces the risk of hazardous reactions during battery operation, thereby enhancing safety and reliability.
  • Low moisture content (114ppm) improves the performance of LiF in high-temperature or high-humidity environments, making it suitable for a wider range of applications.
  • High purity lithium fluoride enhances charge transport for increased solar cell efficiency, maintains material stability for long-term performance, reduces structural defects to improve light absorption, and boosts durability for extended operational life.

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.[1] [3]
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pictograms

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Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

supp_hazards

Storage Class

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

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


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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)
Radiat. Prot. Dosim., 66, 101-101 (1996)
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)
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)

Articles

Solid-state lithium fast-ion conductors are crucial for safer, high-energy-density all-solid-state batteries, addressing conventional battery limitations.

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.

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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