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What is lithium sulfide and how can it be used?

Lithium Sulfide

It is a yellow to white crystal with an inverse fluorite arrangement. Li2S, which is a lithium sulfide, is the molecular formula. The molecular mass of lithium sulfide (45.95) is equal to 1.66. The melting point for lithium sulfide at 938°C is 1372°C. Lithium sulfide can be easily dissolved in water, ethanol and solubles in acid. It is also insoluble in alkali. Rechargeable lithium-ion batteries can use lithium sulfide as an electrolyte.

Lithium sulfide’s physical and chemical characteristics

Physical properties

You can find white or yellow crystals.

Features an anti-fluorite design

The specific gravity of 1.66 (water = 1), 938degC melting point, and 1372degC boiling point are the values.

Water soluble, soluble, ethanol soluble, soluble, acid soluble, insoluble, alkali insoluble.

Chemical nature

Lithium sulfide is able to absorb water vapor from the air and hydrolyzes, releasing highly poisonous hydrogen sulfide.

Separating lithium sulfide with acid can liberate hydrogen sulfuride. It can also react violently to nitric acids, but it can only be decomposed by heating it. Hydrobromic acid or hydroiodic can do this. It reacts slowly and violently with concentrated sulfuric, but not with dilute. It reacts slowly with concentrated sulfuric acid when heated to around 300°C in air. But it doesn’t produce sulfur dioxide. Instead, it produces lithium sulfate.

Preparation for lithium sulfide

You can prepare lithium sulfide in a number of ways. In the past, sulfur and lithium were heated together to react. Then carbon or hydrogen could be used to reduce lithium-sulfate with heating to create lithium sulfide. Later it was discovered that both lithium and sulfur could act in liquid ammonia. Also, lithium ethoxide is capable of decomposing the ethanol adduct from lithium hydrosulfide. This can be used to create lithium sulfide. Following this discovery, some people used hydrogen sulfide (lithium pentoxide) to make lithium hydrogen, sulfide. They then used vacuum heating to melt the lithium hydrogen, sulfide.

Anhydrous lithium sulfide is a high-quality product that can be made by reacting metallic lithium and hydrogen sulfide with tetrahydrofuran.

Application of lithium sulfide

Lithium sulfide is mostly used in rechargeable battery lithium-ion batteries as an electrolyte.

Precautions and storage of lithium sulfide

Lithium Sulfide is able to absorb water vapor from the air and hyrolyzes it, releasing highly toxic hydrogen sulfuride gas. It must be kept at room temperatures in a dry, dark area.

Hydrogen sulfuride can cause slight harm to water bodies. Do not expose large quantities or undiluted products to groundwater or sewers.

The irritation from lithium sulfide

The skin: Itching of the skin and mucous membranes

Irritation: The effects above the eyes

Sensitization: There is no known sensitization

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