What is Tin disulfide?
Tin disulfide is an organic compound with chemical formula SnS2. It is a yellow hexagonal flake with the CdI2 crystal form. It is not very soluble in water, however, it is soluble in aqua regia , and hot alkaline solutions. It's can be found in sodium sulfide Solution, commonly used for gold paint.
Tin disulfide will dissolve in the hot alkali solution. It can undergo coordination reaction with concentrated acid, but it is not soluble in dilute acids and insoluble in water and nitric acid. It may also react with ammonium sulfide to dissolve.
How to prepare Tin disulfide?
Tin disulfide is produced by directly combining tin and sulfur with iodine. The reaction involves the heating process:
2. S --- SnS2
Another option is to introduce hydrogen sulfide in the tin (IV) salts or in the tin (IV) salt solution, and then form a precipitate.
Electrochemical properties of multi-walled carbon nanotubes confined by tin disulfide. It is the negative electrode of lithium ion battery
The direct current arc-plasma method is used to prepare multi-walled carbon nanotube-confined metal tin Nanostructures (Sn@MWCNT) as a precursor in a methane atmospheric environment. Then SnS_2@MWCNT nanostructures were obtained through this sulfurization. The physical properties of the material such as Raman, X-ray diffracted (XRD) as well as the transmission electron microscope (TEM) proved that the length of multi-walled carbon-carbon nanotubes was around 400nm. The surfaces of the carbon layer were well crystallized with the thickness of carbon being about 10 nm. Lithium-ion batteries using Sn S2@MWCNT nanostructures as anode material have shown relatively good electrochemical performance. The initial discharge-charge Coulomb effect is 71%, following 50 cycles, this capacity still remains at 703mAh?g-1. The high-capacity characteristics of SnS_2@MWCNT nanostructured electrodes result from the fact that many of active materials provide the capacity , as well as the catalyst for each of them is distinct.
Study on electrochemical performance of tin disulfide/single-walled carbon nanotube composite material used as anode material for lithium-ion battery
A novel composite material comprising SnS2 and single-walled carbon nanotubes (SWCNTs) was developed using an easy solvothermal technique. It was found to have excellent electrochemical characteristics after being added to the negatively electrode material of the lithium ion battery. At a higher current density that is 1 A/g. After hundred cycles it retains a specific capacity that is reversible of 515 milliamps per gram. To illustrate, we applied similar methods to synthesize one SnS2 material and conducted Electrochemical testing on it. Results indicate that although the initial capabilities of SnS2 material is relatively large, the performance of its cycles is not as good, and it diminishes quickly after less than 20 cycles. The superior effectiveness of this alloy material when used in lithium-ion batteries thought to be due to its synergy with the two constituents made up of SnS2 as well as SWCNTs.
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