What exactly is Tin disulfide?
Tin disulfide, an inorganic compound with the chemical formula SnS2. It is a yellow hexagonal flake containing one CdI2 crystal shape. It isn't really soluble in water, but it is soluble in aqua regia and hot alkaline solutions. It is as well in sodium sulfide Solution, commonly used as gold paint.
Tin disulfide dissolves in aqua regia and hot alkali solution. It may undergo co-reaction with concentrated acid, but it is impermeable to dilute acids, insoluble in water, and nitric acid. It is also capable of resolving with ammonium sulfide , causing it to dissolve.
How to make the tin disulfide?
Tin disulfide is produced simply by combining tin directly with sulfur in the presence of Iodine. The reaction requires heating:
Sn + 2 S -- SnS2
Another approach is to inject hydrogen sulfide in solution of tin (IV) salt or (IV) salt solution, and then the precipitate.
Electrochemical behavior of multi-walled carbon Nanotubes, confined using tin disulfide to form the negative electrodes of lithium-ion battery
Direct current arc plasma technique was used to make multi-walled carbon nanotubes-confined metal tin Nanostructures (Sn@MWCNT) as the precursor in methane-like atmosphere. SnS_2@MWCNT was obtained by the process of sulfurization. The physical characterization results of the materials such as Raman, X-ray Diffraction (XRD) as well as transmission electron microscopy (TEM) showed that the length of the multi-walled carbon nanotubes was 400nm. The Carbon layer on the surface had been crystallized, as was the layer's thickness 10 nm. Lithium-ion batteries that use Sn S2@MWCNT nanostructures as anode materials exhibit a decent electrochemical performance. The initial charges-discharge Coulomb efficiency is 71% in the course of 50 cycle, it is still at 703 mAh?g-1. The superior capacity characteristics of SnS_2@MWCNT nanostructured electrodes stem from the fact that a wide range different active materials are able to provide capability together, and the chemical reaction platform for each one is different.
Study on electrochemical performance of tin disulfide/single-walled carbon nanotube composite material used as anode material for lithium-ion battery
A new composite substance made of SnS2 together with the single-walled carbon-nanotube (SWCNTs) was developed using the simple solvothermal method. It has excellent electrochemical properties after being placed on the electrode that is negative of the lithium ion battery. With a high current density of 1 A/g, after hundred cycles it has a reversible specific power of approximately 510 mAh/g. For comparison, we used the same method for synthesis of a single SnS2 material, and conduct an electrochemical analysis on it. The results demonstrate that, although the initial specific capability of SnS2 material is quite high, the efficiency of the cycle is not great, and decreases rapidly after less than 20 cycles. The better quality of this material for lithium-ion batteries thought to be the result of the synergy of the two ingredients from SnS2 as well as SWCNTs.
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