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What is Tin disulfide?
Tin disulfide can be described as an inorganic compound with the chemical formula SnS2. It is a yellow hexagonal flake containing an CdI2 Crystal structure. It is hardly soluble in water, however, it is solubilized in aqua regia or hot alkaline solutions, and also in sodium sulfide Solution, which is commonly used as gold paint.
Tin disulfide is soluble in aqua regia as well as hot alkali solution. It can also undergo coordination reaction with concentrated acid. However, it's non-soluble in dilute acid, insoluble in water, and in nitric acid. It is also able to react with ammonium sulfur to dissolve.
How to prepare the tin disulfide?
Tin disulfide is made through the direct combination of tin with sulfur with the iodine. The reaction requires heating:
Sn + 2 S --- SnS2
Another method is to pass hydrogen sulfide into solution of tin (IV) salt solution or the tin (IV) salt solution to melt it.
Electrochemical behavior of multi-walled carbon nanotubes held in to tin dioxide as the negative electrode of lithium ion battery
Direct current arc plasma technique was used to prepare multi-walled carbon nanotubes-confined metal tin Nanostructures (Sn@MWCNT) as a precursor in a methane atmosphere, and then SnS_2@MWCNT nanstructures were formed by an sulfurization process. The results of physical analysis of the material like Raman, X-ray diffraction (XRD) as well as the transmission electron microscope (TEM) confirmed that the length of the multi-walled carbon nanotubes was about 400nm, the surface carbon layer was crystallized and the thickness of the carbon layer was approximately 10 nm. Lithium-ion batteries that use Sn S2@MWCNT nanostructures as anode materials have relatively good electrochemical performance. The initial charges-discharge Coulomb efficiency is 71% and after 50 cycles, this capacity still remains at 703mAh?g-1. The characteristics of high-capacity SnS_2@MWCNT nanostructured electrodes are due to the fact that a variety of active materials provide the capacity in combination, and the reaction platform of each material 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 of SnS2 with single-walled carbon Nanotubes (SWCNTs) was produced using an easy solvothermal technique. It was found to have good electrochemical properties when applied to the negative electrode of the lithium Ion batteries. With a high current density of 1 A/g, even after hundred cycles it still keeps a reversible reversible particular capacity of 500 mAh/g. In order to compare, we applied the same method for synthesis of one SnS2 material, and conduct an electrochemical analysis on it. The results show that even though the initial specific power of SnS2 material is quite excellent, the cycle efficiency is not great, and will begin to decline after only 20 cycles. The superior capacity of this particular composite for batteries that use lithium is thought to be due to the synergy between two ingredients made up of SnS2 and SWCNTs.
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