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213241

Sigma-Aldrich

Lithium sulfide

99.98% trace metals basis

Synonym(s):

(lithiosulfanyl)lithium

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About This Item

Empirical Formula (Hill Notation):
Li2S
CAS Number:
12136-58-2
Molecular Weight:
45.95
EC Number:
235-228-1
MDL number:
MFCD00011085
UNSPSC Code:
12352300
PubChem Substance ID:
24852674
NACRES:
NA.23

grade

battery grade

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 powder is a high-purity, inorganic compound that appears as a white to yellowish crystalline powder. It has a molecular weight of 45.95 g/mol and a density of 1.82 g/cm³. Lithium sulfide is a strong nucleophile and has the chemical formula Li₂S. It readily reacts with water to produce lithium hydroxide and hydrogen sulfide gas. It is also soluble in some organic solvents, such as pyridine and dimethyl sulfoxide.

Application

High-purity lithium sulfide is primarily used as a precursor in the synthesis of other lithium compounds such as lithium thioacetate, lithium tetrafluoroborate, and thio-LISICONs, which are used in lithium-ion batteries among other applications. High-purity lithium sulfide can also be used directly in battery applications as a cathode material in lithium-sulfur batteries. With a theoretical capacity of up to 1166 mAh/g, almost four times that of lithium cobalt oxide, lithium sulfide has gained attention as next-generation cathode material. Additionally, lithium sulfide is used as a precursor in the semiconductor industry for the production of thin-film transistors (TFTs) and other electronic devices, especially lithium sulfide-phosphorus oxide (Li2S-P2O5) TFTs. It is also used in the chemical manufacturing industry as a precursor for lithium hydride, lithium borohydride, and lithium amide, among many other applications.

Features and Benefits

Higher Purity - 99.98%, making it an ideal choice for applications that require higher purity materials.

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301,H314

Hazard Classifications

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

Supplementary Hazards

EUH029

Storage Class Code

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

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)

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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Is Lithium Sulfide a MgB2-like Superconductor?-like Superconductor?
Isikaku-Ironkwe OP
arXiv (2012)
Shiyou Zheng et al.
ACS nano, 7(12), 10995-11003 (2013-11-21)
Highly stable sulfur/microporous carbon (S/MC) composites are prepared by vacuum infusion of sulfur vapor into microporous carbon at 600 °C, and lithium sulfide/microporous carbon (Li2S/MC) cathodes are fabricated via a novel and facile in situ lithiation strategy, i.e., spraying commercial
Stable cycling of lithium sulfide cathodes through strong affinity with a bifunctional binder
Seh ZW, et al.
Chemical Science, 4(9), 3673-3677 (2013)
Li-Ping Lv et al.
Small (Weinheim an der Bergstrasse, Germany), 15(3), e1804338-e1804338 (2018-12-18)
In this work, hydroxyl-functionalized Mo2 C-based MXene nanosheets are synthesized by facilely removing the Sn layer of Mo2 SnC. The hydroxyl-functionalized surface of Mo2 C suppresses the shuttle effect of lithium polysulfides (LiPSs) through strong interaction between Mo atoms on
Wen Liu et al.
Proceedings of the National Academy of Sciences of the United States of America, 114(14), 3578-3583 (2017-03-23)
Lithium-sulfur batteries (Li-S batteries) have attracted intense interest because of their high specific capacity and low cost, although they are still hindered by severe capacity loss upon cycling caused by the soluble lithium polysulfide intermediates. Although many structure innovations at
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