What exactly is Tin disulfide?
Tin disulfide is a non-organic compound that has a chemical formula of SnS2. It is the color of a yellow hexagonal flake and has that has a CdI2 crystal structure. It is not very soluble in water, however it is liquid in aqua regia and hot alkaline solutions, and as well in sodium sulfide Solution, which is often used as golden paint.
Tin disulfide is soluble in the alkali in hot and aqua regia solution. It is also able to undergo co-reaction with concentrated acid, but it is dissolvable in dilute hydrochloric acids and insoluble in water and the acid nitric. It is also able to react with ammonium sulfide and dissolve.
How do I prepare Tin disulfide?
Tin disulfide can be obtained by directly mixing tin and sulfur in the presence of Iodine. The reaction involves heat:
Sn + 2 S --- SnS2
Another method is to pass hydrogen sulfide in the solution of either tin (IV) salt , or into the tin (IV) salt solution and form a precipitate.
Electrochemical properties of multi-walled carbon nanotubes held in by tin disulfide. It is the negative electrode for lithium ion battery
Direct current arc plasma technique was employed to produce multi-walled carbon nitrotube-confined metallic tin nanostructures (Sn@MWCNT) as an intermediate in a methane atmosphere. Later, SnS_2@MWCNT nanostructures were created by the sulfurization reaction. The physical characterization results of the material , such as Raman, X-ray diffracted (XRD), and transmission electron microscopy (TEM) showed that the size of multi-walled carbon Nanotubes was about 400nm, the surface carbon layer was well crystallized with the thickness of carbon being 10 nm. Lithium-ion batteries made of Sn S2@MWCNT nanostructures for anodes materials show relatively good electrochemical performance. The first charge-discharge Coulomb performance is 71%, with 50 cycles, the power remains constant at 703 mAh?g-1. The high-capacity characteristics of SnS_2@MWCNT nanostructured electrodes stem from the fact that a wide range of active substances provide the capability together, and the catalyst for each of them 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 material of SnS2 as well as single-walled carbon nanotubes (SWCNTs) was made by a simple solvothermal method. It is found to have good electrochemical properties when added to the negatively electrode material of lithium ion battery. At a current density that is 1 A/g. After hundred cycles it still keeps a reversible reversible particular capacity of more than 510 milliamps/g. To illustrate, we applied similar methods to synthesize one SnS2 material and conducted experiments on its electrochemistry. The results show that although the initial specific capability of SnS2 material is high, the efficiency of the cycle is poorand goes through a rapid decline after less than 20 cycles. The exceptional performances of this compound in lithium-ion batteries are believed to be the result of the synergy between the two elements which are SnS2 in addition to SWCNTs.
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