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518018

Sigma-Aldrich

Lithium iodide

greener alternative

99.9% trace metals basis

Synonym(s):

Lithium(1+)iodide

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About This Item

Linear Formula:
LiI
CAS Number:
10377-51-2
Molecular Weight:
133.85
EC Number:
233-822-5
MDL number:
MFCD00011092
UNSPSC Code:
12352302
PubChem Substance ID:
24873993
NACRES:
NA.23

Quality Level

200

assay

99.9% trace metals basis

form

powder

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

impurities

≤1500.0 ppm Trace Metal Analysis

mp

446 °C (lit.)

density

3.49 g/mL at 25 °C (lit.)

greener alternative category

Enabling,

SMILES string

[Li+].[I-]

InChI

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

InChI key

HSZCZNFXUDYRKD-UHFFFAOYSA-M

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General description

Lithium iodide is widely used as an electrolyte additivein dye-sensitized solar cells and Li-S batteries, as it enables long cyclelife. It is also used as a phosphor for neutron detection.
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Application

Lithium iodide(LiI)can be used as an electrolyte additive:

  • To prepare biodegradable polymer electrolytes.Rice starch complexed with LiI shows enhanced ionic conductivity as theaddition of LiI increases the number of mobile charge carriers.
  • For Li-S batteries. LiIforms a protective coating on the surface of both negative and positiveelectrodes and prevents the dissolution of polysulfides on the cathode sidewhich significantly enhances cell rate performance.
It can also be used to prepare Li-basedscintillators with enhanced thermal neutron detection efficiency.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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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Feixiang Wu et al.
Advanced materials (Deerfield Beach, Fla.), 27(1), 101-108 (2014-11-05)
Lithium Iodide (LiI) is reported as a promising electrolyte additive for lithium-sulfur batteries. It induces formation of Li-ion-permeable protective coatings on both positive and negative electrodes, which prevent the dissolution of polysulfides on the cathode and reduction of polysulfides on
Seon-Joo Choi et al.
ACS applied materials & interfaces, 10(37), 31404-31412 (2018-08-28)
All-solid-state lithium batteries (ASSLBs) based on sulfide solid electrolytes (SEs) have received great attention because of the high ionic conductivity of the SEs, intrinsic thermal safety, and higher energy density achievable with a Li metal anode. However, studies on practical
Jianjian Lin et al.
Scientific reports, 4, 5769-5769 (2014-08-30)
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ChemSusChem, 8(22), 3799-3804 (2015-10-17)
Dye-sensitized solar cells (DSCs) with long-term stability are produced using polymer-gel electrolytes (PGEs). In this study, we introduce the formation of PGEs using in situ gelation with poly(methyl methacrylate) (PMMA) particles and graphene fillers that are pre-deposited on the counter electrodes.
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Chemistry, an Asian journal, 10(9), 1932-1939 (2015-07-15)
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