5results about How to "Non-flammable" patented technology

The invention discloses a sodium-ion battery electrolyte of a low-fluoro phosphate system and a sodium-ion battery, the sodium-ion battery electrolyte comprises sodium salt, a solvent and an electrolyte additive, the solvent is a low-fluoro phosphate solvent, the low-fluoro phosphate ester solvent is one or more than two of trimethyl phosphate, triethyl phosphate and / or tripropyl phosphate, wherein the trimethyl phosphate, the triethyl phosphate, the triethyl phosphate and the tripropyl phosphate are 1, 2, 3, 4, 5, 6-hexafluoro respectively. The sodium-ion battery electrolyte of the low-fluorophosphate system and the sodium-ion battery have the characteristics of high conductivity, strong compatibility and good safety.

The utility model discloses a novel environment-friendly die-casting spraying decoration outer cylinder structure which is integrally formed in a die-casting mode. The outer barrel comprises an outer barrel body, an ignition cavity and a gunpowder cavity, wherein a sealing layer and a connecting channel are arranged between the ignition cavity and the gunpowder cavity; the volume of the ignition cavity is far smaller than that of the gunpowder cavity, and the ignition cavity is located at the upper position during vertical use; an arc-shaped sealing outer wall protruding upwards is arranged above the sealing layer, an upper ignition cavity of an inverted-cone-shaped structure is arranged in the middle of the sealing outer wall, a lower ignition cavity of a cone-shaped structure is correspondingly arranged below the sealing layer, and cone-shaped heads between the two cavities are communicated. And the lower ignition cavity is downwards in smooth transition with the inner wall of the circular-arc-shaped upwards-convex sealing opening above the gunpowder cavity. In order to solve the problems, the utility model provides a novel environment-friendly die-casting firework spraying outer cylinder structure which is simple in structure, convenient to operate, capable of being integrally formed, produced in batches, good in firework setting-off effect, environment-friendly, free of pollution, free of fire hazards and stable in spraying effect.

This invention discloses an alkaline ionic liquid catalyst, its preparation method, and its application. The alkaline ionic liquid catalyst has the structural formulas [DBUH]phy, [TBDH]phy, and [DBUH]tbd. The calculated amounts of 1,8-diazabicycloundec-7-ene (DBU), 1,5,7-triazidobicyclo(4,4,0)dec-5-ene (TBD), and phenol (phy) are reacted to obtain the alkaline ionic liquid catalyst. It is used to synergistically catalyze a series of reactions between aliphatic diols and CO2 to synthesize cyclic carbonates with H2SO4, exhibiting high selectivity and wide applicability. Compared with existing cyclic carbonate synthesis processes, the synthesis of cyclic carbonates via alkaline ionic liquid catalysts from aliphatic diols and CO2 is safer, pollution-free, and features good catalyst stability, low dosage, high selectivity, and no byproducts.

The invention relates to a composite current collector, a preparation method thereof and a battery, the composite current collector comprises a net-shaped substrate and a metal layer, and the metal layer covers one surface of the net-shaped substrate along the thickness direction and the inner walls of meshes of the net-shaped substrate; the net-shaped matrix is composed of nanofibers, and the nanofibers comprise a polymer, a polyoxometallate solid electrolyte and a conductive agent; the net-shaped base body comprises a main body part and an edge part, the edge part is located on at least one side of the main body part in the width direction of the net-shaped base body, and meshes of the edge part are filled with metal materials. Therefore, the mass energy density and the safety performance of the battery can be improved.

This invention belongs to the field of lithium-ion battery material preparation technology, and discloses a one-step method for preparing lithium bis(fluorosulfonyl)imide using ionic liquid catalysis and hydrogen fluoride. This method solves the problems of low catalytic efficiency, insufficient product purity, difficult separation, and high environmental impact in existing preparation routes. Using bis(fluorosulfonyl)imide and lithium fluoride as raw materials, anhydrous hydrogen fluoride as the fluorinating agent, and an imidazole-based ionic liquid as the catalyst, under an inert atmosphere, the reaction system is prepared, followed by an integrated fluorination-lithiation reaction and post-treatment purification steps to obtain high-purity lithium bis(fluorosulfonyl)imide. This invention achieves efficient reaction under mild conditions through the synergistic effect of a specific ionic liquid and hydrogen fluoride gas, solving the problems of harsh reaction conditions, low yield, and insufficient purity in existing processes. The product yield is ≥92%, and the purity is ≥99%. The process is simple, safe, and environmentally friendly, suitable for large-scale industrial production, and can be widely used in the preparation of lithium-ion battery electrolytes.