# Al2S3

Aluminum sulfide  ( Al2S3 ) A light  gray chemical compound made by oxidation of metallic aluminum by losing electrons of the previous energy level and becoming a cation and by reduction of non-metallic sulphur, winning electrons produced by aluminum and becoming a metal. is anion.In order for this to happen and aluminum can gain its electrons, it is necessary to introduce a three-hybrid orbital sp 3 , This gives the possibility of forming bonds with electrons from sulfur.

The sensitivity of aluminum sulfide (Al2S3) to water means that, in the presence of water vapor in the air, it can react to produce aluminum hydroxide (Al(OH)). 3 ), hydrogen sulfide (H 2 S) and hydrogen (H 2 ) gas; If the latter accumulates it can cause an explosion. Therefore, packaging of aluminum sulfide (Al2S3) should be done using airtight containers.On the other hand, since aluminum sulfide (Al2S3) has reactivity with water, it forms an element that has no solubility in the said solvent.

## chemical composition

to 2 s 3

### structural formula

– aluminum sulfide.- Di aluminum trisulfide.

– aluminum sulfide (III).

– aluminum sulfide.

## Property

Chemical compounds mostly exhibit two types of properties: physical and chemical.

150,158 g/mol

2.02 g/ml

from 1100 °

unsolved

### chemical properties

One of the main reactions of aluminum sulfide (Al2S3) is with water, as a substrate or main reagent:

Al_2S_2 + 6H_2O ~\longrightarrow ~  2Al(OH)_3 + 3H_2S

In this reaction, the formation of aluminum hydroxide and hydrogen sulfide can be observed if it occurs as a gas, or hydrogen sulfide if it is dissolved in water as a solution. Its presence is recognized by the smell of rotten eggs.

## Uses and Applications

### in supercapacitor

Aluminum sulfide (Al2S3) is used in the fabrication of nanonetwork structures that have improved specific surface area and electrical conductivity, thus achieving a higher capacitance and energy density that has applications to supercapacitors. Graphene oxide (GO)—one of the allotropic forms of graphene carbon—serves as a support for aluminum oxide (Al 2S 3 ) with a hierarchical morphology similar to nano-montana fabricated using the hydrothermal method . .

#### graphene oxide action

The characteristics of graphene oxide as a support, as well as high electrical conductivity and surface area, make the nanoruminant Al 2 S 3  remain electrochemically active.

CV specific capacitance curves with well-defined redox peaks confirm the pseudo-capacitive behavior of Al nanorambutans 2S 3 hierarchical , continuous in graphene oxide in 1M NaOH electrolyte. The typical CV capacitance values ​​obtained from the curves are as follows: 168.97 at a scanning speed of 5mV/s.In addition, a good galvanostatic discharge time of 903 μs is observed, a large specific capacitance of 2178.16 at a current density of 3 mA/cm 2 . The calculated energy density from the galvanostatic discharge is 108 m1/Kg, with the current density being 3 mA/Cm 2 .

The electrochemical impedance thus confirms the hierarchical-capacitive nature of the hierarchical nano-humming electrode Al 2 s 3 . The electrode stability test shows a retention of 57.44% of the specific capacitance for up to 1000 cycles.

Experimental results show that the hierarchy is suitable for nanoruminant Al 2 S 3 supercapacitor applications.

### in secondary lithium battery

With the intention of developing a lithium secondary battery with high energy density, aluminum sulfide (Al2S3) as the active material.

The initial discharge capacity measured from Al was approximately 1170 mAh g in 2 s 3 100 mAg. This corresponds to 62% of the theoretical potential for sulfur.

The Al 2S 3 exhibited a poor capacity retention in the potential range between 0.01 V and 2.0 V, mainly due to the structural irreversibility of the charging process or Li extraction.XRD and K-XANES analyzes for aluminum and sulfur indicated that the Al surface 2S3 reacts inversely during the loading and unloading processes, whereas the Al core 2S3 showed structural irreversibility , as LiAl and Li 2 S was formed from Al23 in the initial download and then they remained as they were.

## risk

– In contact with water, flammable gases are released which can spontaneously burn.

– Causes skin irritation.- Causes severe eye irritation.

– May cause respiratory irritation.

Information may vary between information based on inaccuracies, additives and other factors.

### first aid procedure

#### general treatment

If symptoms persist, seek medical attention.

nobody

nobody

#### breathe

Take the victim outside. Supply oxygen when breathing becomes difficult.

#### bribe

Administer one or two glasses of water and induce vomiting. Never force an unconscious person to vomit or give anything by mouth.

#### skin

Wash the affected area with water and mild soap. Remove any contaminated clothing.

#### Eyes

Wash your eyes with water, blinking frequently for several minutes. Remove contact lenses, if present, and continue rinsing.

### fire fighting measures

Not flammable.

#### extinguished media

reacts with water. Do not use water: CO2, use sand and extinguishing powder.

#### fighting process

Use a full-face self-contained breathing apparatus with complete protection. Wear clothing to avoid contact with skin and eyes.