4 results about "Sodium amide" patented technology

An organic solid electrolyte contains sodium bis(fluorosulfonyl)amide (NaFSA) and polyethylene oxide (PEO), and if EO is a constituent unit of PEO, the molar ratio of Na:EO between NaFSA and PEO is in the range of 1:20 to 1:50. A solid-state sodium-ion battery comprises a cathode layer, an organic solid electrolyte layer consisting of the aforementioned organic solid electrolyte layer, an inorganic solid electrolyte layer, and an anode layer, in that order in terms of thickness.

The application discloses a preparation method of 2,2-diisopropylpropionitrile and belongs to the technical field of food additive intermediate synthesis. The method comprises the following steps: S1, adding sodium amide, a solvent and a catalyst into a reactor, stirring until being uniformly dispersed, and obtaining a reaction system; S2, uniformly mixing 2,3-dimethylbutyronitrile and 2-bromopropane to form a premix; dropping the premix into the reaction system, continuing to stir for 0.5-1 hours after dropping is completed; S3, adding deionized water into the reaction system to quench the reaction; after quenching the reaction, cooling and stirring the reaction system, layering after standing, and reserving an upper organic phase; S4, transferring the organic phase into a distillation device, performing normal pressure distillation, and separating the solvent; the normal pressure distillation temperature is 60-90 DEG C; performing vacuum distillation on the organic phase after the normal pressure distillation, collecting a distillate, and obtaining a product. The prepared 2,2-diisopropylpropionitrile has high yield and high purity.

An organic solid electrolyte includes sodium bis(fluorosulfonyl)amide (NaFSA), and polyethylene oxide (PEO), and when a constituent unit of PEO is EO, a molar ratio of Na:EO between NaFSA and PEO is within a range of 1:20 to 1:50. An all-solid-state sodium-ion battery includes a cathode layer, an organic solid electrolyte layer that is made of the above organic solid electrolyte, an inorganic solid electrolyte layer, and an anode layer, in this order in a thickness direction.

The application provides a modification method of a secondary battery positive electrode material, a modified positive electrode material and a secondary battery, and the modification method comprises the following steps: S1, dissolving a chemical modifier in a solvent to obtain a chemical modifier solution; the chemical modifier is one or more of urea, urotropin, thiourea, acylurea, selenourea, thioacetamide, phosphorotriamide, ammonium carbonate, ammonium bicarbonate, ammonium chloride, sodium amide, ammonium acetate, ammonium oxalate, amino acid, protein and biological glue; S2, dispersing a metal oxide positive electrode material in the chemical modifier solution to obtain a dispersion liquid; S3, performing a solvothermal reaction on the dispersion liquid, and after the reaction is completed, the obtained product is washed and dried; and S4, performing a heat treatment on the dried product in an oxygen or air atmosphere, and after the heat treatment is completed, a modified positive electrode material is obtained. The method discards the traditional chemical modifier and treatment method, and has the advantages of simple process flow, low raw material cost and universal application.