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213241

Sigma-Aldrich

Lithium sulfide

99.98% trace metals basis

Synonym(s):
(lithiosulfanyl)lithium
Empirical Formula (Hill Notation):
Li2S
CAS Number:
Molecular Weight:
45.95
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

grade

battery grade

Quality Level

assay

99.98% trace metals basis

form

powder

composition

Li2S

reaction suitability

reagent type: catalyst
core: lithium

density

1.66 g/mL at 25 °C (lit.)

application(s)

battery manufacturing
battery manufacturing

storage temp.

2-8°C

SMILES string

[Li]S[Li]

InChI

1S/2Li.S

InChI key

ZWDBUTFCWLVLCQ-UHFFFAOYSA-N

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General description

Lithium sulfide is an anti fluorite semiconductor (bandgap 3.865eV). It exists in orthorhombic and cubic structures. The densities of the orthorhombic and cubic structures are 1.75g/cm3 and 1.63g/cm3 respectively.

Application

Lithium sulfide can be widely used as acathode material in Li-S batteries. For example, it can be used as an activematerial to prepare LiS2-C electrode with high reversibility andcycling efficiency and preparation of lithium/polymer electrolyte/LiS2 compositecathode.

Itcan also be used to prepare solid electrolyte interphase (SEI) on Li metalanode. This SEI layer can suppress Li dendrite growth and minimize sidereactions.

Packaging

5, 10, 50 g in glass bottle

Features and Benefits

  • Owing to its high melting point, LiS2 provides a wide operational temperature range to synthesize composite cathode.
  • Low density and high specific capacity of LiS2 help to avoid volume expansion during cycling.
  • LiS2 has excellent chemical stability against Li and high ionic conductivity (≈10−5 S cm−1).

Pictograms

CorrosionSkull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Supplementary Hazards

Storage Class Code

6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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More Documents

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