518018
Lithium iodide
99.9% trace metals basis
Synonym(s):
Lithium(1+)iodide
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All Photos(3)
About This Item
Linear Formula:
LiI
CAS Number:
Molecular Weight:
133.85
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
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Assay
99.9% trace metals basis
form
powder
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impurities
≤1500.0 ppm Trace Metal Analysis
mp
446 °C (lit.)
density
3.49 g/mL at 25 °C (lit.)
greener alternative category
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.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
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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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
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