The present disclosure is related to a method for applying a functional compound on sulfur particles by means of an atmospheric pressure plasma discharge including a gas or an activated gas flow resulting from the atmospheric pressure plasma discharge. The coating composition includes an inorganic electrically conductive compound, an electrically conductive carbon compound, an organic precursor compound of a conjugated polymer, a precursor of a hybrid organic-inorganic compound, or a mixture, and the functional compound provides the sulfur particles with an electrically conductive surface.

The invention relates to a method for producing a master batch comprising between 0.01 and 50 wt. % of carbonaceous nanofillers and at least one sulphurated material such as elemental sulphur by melt compounding, and to the master batch thus produced and the different uses thereof. The invention also relates to a solid composition comprising carbonaceous nanofillers dispersed in a sulphurated material.

Provided are a preparation method for insoluble sulfur and an anti-reversion stabilizer used thereby. Methane is used as the anti-reversion stabilizer. The methane is added to liquid sulfur at sulfur gasification stage, and is cracked into active free radicals under the action of sulfur vapor active free radicals; in the quenching process of sulfur vapor mixed with methane, the active free radicals generated by methane cracking carry out end capping on insoluble sulfur end groups generated by sulfur vapor polymerization, thus completing insoluble sulfur stabilization. The methane is added at liquid sulfur gasification stage, and after sulfur gasification, the methane is mixed with sulfur vapor in a gaseous form, rather than being added to the product in a solid or liquid manner at a later stage, so that the insoluble sulfur and the stabilizer can be uniformly contacted and mixed to the greatest extent.

This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used as electrode materials for secondary batteries or other energy storage devices.

A method for producing insoluble sulfur, including: heating a sulfur to 200-700° C., quenching it with water, aqueous solution and other solvents, drying and solidifying the resulting substance at 40-80° C. for 3-15 h, to obtain an insoluble sulfur crude product; crushing the crude product in water into particles with a particle size of 50-400 meshes, wherein the water temperature is not higher than 80° C.; pumping the slurry of water and crude product into the upper part of an extraction column, pumping solvent into the lower part thereof; making the water and solvent from the top of the column flow into a separation tank to separate water phase and solvent phase, heating and evaporating the solvent phase to recover solvent and obtain soluble sulfur; heating and evaporating the insoluble sulfur and solvent from the bottom of the column to recover solvent and obtain purified insoluble sulfur.

This application relates to nanostructured materials having selectively permeable structures that separate a liquid phase contained within the nanostructure from a volume outside of the nanostructure, and methods of making same. Such materials may be used in the manufacture of lithium anode compositions for secondary batteries or other energy storage devices.

A composition containing nano-sulfur and an application thereof, the composition containing nano-sulfur contains nano-sulfur and further contains an anti-agglomeration agent used for preventing or delaying the agglomeration of the nano-sulfur, is provided. The composition containing nano-sulfur may be widely used for preparing toiletries for use on the surface of the skin on humans or animals, pharmaceutical compositions treating skin disorders, pesticides, preservatives for vegetables and fruits, additives for animal feed, additives for mold prevention in paint, mold prevention agents for textiles or (textile) mite-killing agents. The composition containing nano-sulfur is easy to prepare, and the nano-sulfur may remain in the nano state for a long time, reducing or even eliminating the occurrence of the agglomeration of the nano-sulfur, while achieving the goals of being applied in various products and preventing fungus by simply adding a very small amount.

Provided are a preparation method for insoluble sulfur and an anti-reversion stabilizer used thereby. Methane is used as the anti-reversion stabilizer. The methane is added to liquid sulfur at sulfur gasification stage, and is cracked into active free radicals under the action of sulfur vapor active free radicals; in the quenching process of sulfur vapor mixed with methane, the active free radicals generated by methane cracking carry out end capping on insoluble sulfur end groups generated by sulfur vapor polymerization, thus completing insoluble sulfur stabilization. The methane is added at liquid sulfur gasification stage, and after sulfur gasification, the methane is mixed with sulfur vapor in a gaseous form, rather than being added to the product in a solid or liquid manner at a later stage, so that the insoluble sulfur and the stabilizer can be uniformly contacted and mixed to the greatest extent.

A method for producing insoluble sulfur, including: heating a sulfur to 200-700° C., quenching it with water, aqueous solution and other solvents, drying and solidifying the resulting substance at 40-80° C. for 3-15 h, to obtain an insoluble sulfur crude product; crushing the crude product in water into particles with a particle size of 50-400 meshes, wherein the water temperature is not higher than 80° C.; pumping the slurry of water and crude product into the upper part of an extraction column, pumping solvent into the lower part thereof; making the water and solvent from the top of the column flow into a separation tank to separate water phase and solvent phase, heating and evaporating the solvent phase to recover solvent and obtain soluble sulfur; heating and evaporating the insoluble sulfur and solvent from the bottom of the column to recover solvent and obtain purified insoluble sulfur.

A sulfur-carbon composite and a lithium secondary battery including the same are discussed. More specifically, a network-shaped coating layer including a conductive polymer is formed on a surface of the sulfur-carbon composite, and thus the conductivity of the sulfur-carbon composite is enhanced and also, lithium ions move freely, and accordingly, when applied to lithium secondary batteries, the sulfur-carbon composite can enhance the performance of batteries.