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931969

Sigma-Aldrich

Lithium perchlorate

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anhydrous, ≥99.9% trace metals basis

Synonym(s):

Perchloric acid lithium salt

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About This Item

Linear Formula:
LiClO4
CAS Number:
Molecular Weight:
106.39
MDL number:
UNSPSC Code:
12352302
NACRES:
NA.23

grade

anhydrous
battery grade

Quality Level

assay

≥99.9% trace metals basis

form

powder

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impurities

≤1000 ppm (trace metals analysis)

pH

6.0-7.5 (25 °C, 5%, aq.sol.)

mp

236 °C (lit.)

solubility

H2O: 59.8 g/dL at 25 °C

anion traces

chloride (Cl-): ≤30 ppm
sulfate (SO42-): ≤10 ppm

cation traces

Fe: ≤5 ppm
heavy metals: ≤10 ppm

application(s)

battery manufacturing

greener alternative category

SMILES string

[Li+].[O-]Cl(=O)(=O)=O

InChI

1S/ClHO4.Li/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1

InChI key

MHCFAGZWMAWTNR-UHFFFAOYSA-M

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General description

Anhydrous lithium perchlorate is a white-to-colorless crystalline salt. It is hygroscopic and deliquescent and usually stored under inert atmosphere. It is highly soluble in water and soluble in a variety of organic solvents including alcohols, acetone, acetonitrile, ethyl acetate, ethers, carbonates, and other polar organic solvents. Lithium perchlorate is a strong oxidizing agent.
Industrially, lithium perchlorate is manufactured in several ways. Most commonly, it is prepared from sodium perchlorate through a metathesis reaction with lithium chloride or lithium carbonate. Lithium perchlorate can also be prepared by direct electrochemical oxidation of lithium chloride or by reacting lithium carbonate with perchloric acid. The hydrate can be dried either by highly controlled heating or by displacing water with volatile amines, which are removed by drying under vacuum.
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Application

The primary application of lithium perchlorate is as an electrolytic salt in lithium-ion batteries. Many of the early, now-famous reports of lithium batteries used lithium perchlorate dissolved in polar organics as the electrolyte and the salt remains popular because of its high solubility, electrochemical stability, and low cost. In the search for solid electrolytes, lithium perchlorate (5-12 wt%) is often added to polyethylene oxide (PEO) and composited with ceramic nanoparticles like LLZO and LATP .
Researchers also use lithium perchlorate as an electrolytic salt in aqueous media when testing electrocatalysts. For example, recent experiments improving the electrochemical reduction of nitrogen over TiO2 nanoparticles or gold nanoparticles use aqueous lithium perchlorate as the electrolyte.

Packaging

100g in poly bottle
500g in poly bottle

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Ox. Sol. 2 - Skin Corr. 1A - STOT SE 3

target_organs

Respiratory system

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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Electrochemical and In Situ X?Ray Diffraction Studies of Lithium Intercalation in Lix CoO2
Reimers, J.N., et al.
Journal of the Electrochemical Society, 139, 2091-2091 (1992)
The spinel phase of lithium manganese oxide (LiMn2O4) as a cathode in secondary lithium cells
Tarascon, J.M., et al.
Journal of the Electrochemical Society, 138, 2859-2864 (1991)

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