What is lithium sulfide and its application?

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 is a lithium sulfide. The molecular mass of lithium sulfide (45.95) is equal to 1.66. The melting point for lithium sulfide at 938°C is 972°C, and its boiling point at 1372°C is 1372°C. Lithium sulfide can be easily dissolved in water, ethanol and soluble, but not 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 is 1.66 (water = 1); the melting point at 938degC is 938degC and the boiling point at 1372degC are both 1.66.

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 be decomposed only by heating it. 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. Lithium sulfide was made by heating sulfur and lithium together. Then, carbon or hydrogen were used to reduce lithium-sulfate with heat to produce 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. To prepare lithium hydrogen, sulfide, some people used hydrogen sulfide with lithium pentoxide.

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 stored at room temperature in an enclosed, dark area and kept dry.

Hydrogen sulfuride is somewhat harmful 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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