12 results about "Phosphorus sulfide" patented technology

A method for producing a sulfide-based inorganic solid electrolyte material, the method including a step of obtaining a sulfide-based inorganic solid electrolyte material in a vitreous state by mechanically processing a raw material composition of the sulfide-based inorganic solid electrolyte material including lithium sulfide and a phosphorus sulfide composition such that each component is vitrified in a chemical reaction, in which the phosphorus sulfide composition has three or more peaks in a range of 2θ = 22.5° or more and 24.5° or less in an X-ray diffraction analysis spectrum obtained by X-ray diffraction analysis.

The invention discloses a zinc thiophosphate material with a yolk double-shell structure as well as a preparation method and application thereof, and relates to the technical field of sodium ion batteries. The preparation method comprises the following steps: firstly, preparing a ZIF-8 precursor template through a zinc source and solvothermal reaction of 2-methylimidazole, and then sequentially carrying out coating, template etching, synchronous carbonization and vulcanization treatment and phosphorus vulcanization treatment on the ZIF-8 precursor template to finally obtain the ZnPS3 / NC-C material with the yolk double-shell structure and excellent electrochemical performance. Compared with a traditional transition metal thiophosphate preparation process, the method is safer in process, and the yolk double-shell morphology of the metal phosphorus sulfide can be accurately regulated and controlled. Compared with pure zinc thiophosphate prepared by a traditional process, the prepared ZnPS3 / NC-C material with the yolk double-shell structure has the characteristics of hollow and porous characteristics, high specific surface area and structural stability, and shows relatively high first charge-discharge efficiency and excellent cycle stability when being used as a sodium-ion battery negative electrode material.

The preparation method comprises the following steps: (1) adding a lead salt and diammonium hydrogen phosphate into deionized water, stirring at room temperature, dropwise adding ammonia water into the deionized water in the stirring process, continuously stirring to obtain a mixed solution, adding the mixed solution into a hydrothermal kettle for reaction at the hydrothermal temperature of 100-200 DEG C for 10-30 hours, and filtering to obtain a filtrate; carrying out solid-liquid separation on a white product after the reaction to obtain a solid matter, drying the solid matter at 50-60 DEG C, and then carrying out high-temperature calcination to obtain lead phosphate powder; and (2) vulcanizing the lead phosphate powder to prepare the infrared detection material based on vulcanized lead phosphate. The prepared infrared detection material based on sulfurized lead phosphate is used for an infrared detector. The synthesis method has the beneficial effects that 1, the synthesis method is simple and low in cost, the used solvent is environment-friendly and green, and the synthesis method is suitable for large-scale production; and 2, the vulcanized lead phosphate disclosed by the invention has an ultra-low band gap and has the feasibility of infrared detection.

The application discloses a solid-state polymer electrolyte containing two-dimensional nano additives and a preparation method and application thereof, and belongs to the technical field of lithium metal batteries. The preparation method of the solid-state polymer electrolyte is as follows: transition metal phosphorus sulfide precursors, lithium salt and polymer are added into a dispersing agent, stirring is conducted to strip the transition metal phosphorus sulfide and lithiumize, and a polymer electrolyte precursor solution is formed; and stirring is finished to obtain a mixture slurry; wherein the transition metal phosphorus sulfide precursors include one or more of FePS3, MnPS3, CdPS3 and ZnPS3; the mixture slurry is coated on a mold, and drying is conducted to obtain the solid-state polymer electrolyte containing two-dimensional nano additives. The preparation method is a one-step lithiumization method for preparing two-dimensional nano additives, is more simple than a two-step alkali metal ion lithiumization method, has no adverse effect on the performance of lithium batteries, and can avoid the introduction of impurity water.

To provide a method for producing a phosphorus sulfide composition, which can stably yield a sulfide inorganic solid electrolyte material with improved lithium ion conductivity, a method for producing a sulfide inorganic solid electrolyte material and a method for evaluating a phosphorus sulfide composition.SOLUTION: A method for producing a phosphorus sulfide composition includes the step of selecting a phosphorus sulfide composition that includes three or more peaks in the range of 2θ=22.5° or more and 24.5° or less, in an X-ray diffraction analysis spectrum.SELECTED DRAWING: None

Provided is a phosphorus sulfide composition for a sulfide-based inorganic solid electrolyte material, in which Reactivity measured by a predetermined method is greater than or equal to 5.0° C. / min.

A solid electrolyte for an all solid state lithium battery includes lithium phosphorus sulfide(LPS), which has been doped during synthesis with a metal halide, such as zirconium tetrachloride. The synthesis includes adding the metal halide to lithium sulfide and phosphorus pentasulfide precursor materials, followed by ball milling and heat treatment.

The invention belongs to the technical field of high-entropy electrode materials and electro-catalysis, and particularly relates to a high-entropy phosphorus sulfide self-supporting electrode material and a preparation method and application thereof. The electrode material comprises a conductive substrate and a catalytic active component, the catalytic active component is a high-entropy phosphorus sulfide which is prepared by performing high-temperature heat treatment on a high-entropy Prussian blue analogue precursor, a phosphorus source and a sulfur source; wherein the chemical general formula of the high-entropy Prussian blue analogue precursor is [M (II)] [Fe (CN) 6], and M (II) is at least three of Mn, Zn, Co, Fe, Ni and Cu; and each M (II) metal element accounts for 5%-35% of the mole percentage of all the M (II) metal elements. The high-entropy Prussian blue analogue precursor, a phosphorus source and a sulfur source are subjected to high-temperature heat treatment, and phosphorus and sulfur elements are successfully introduced into a high-entropy Prussian blue analogue skeleton. The non-metallic element doping can effectively adjust the electronic structure of the material and significantly reduce the oxygen evolution reaction energy barrier, thereby enhancing the intrinsic catalytic activity.

The invention provides a sulfide solid electrolyte, a preparation method thereof and an all-solid-state battery, and relates to the technical field of batteries. The method comprises the following steps: mixing and grinding lithium sulfide and phosphorus sulfide to obtain a non-crystallized mixture, and then carrying out first heat treatment and refining on the non-crystallized mixture to obtain a first mixture with fine particles and fine powder; meanwhile, lithium sulfide and halogen lithium salt are mixed and granulated, and a granular second mixture is obtained; and finally, obtaining the sulfide solid electrolyte according to the first mixture and the second mixture. The sulfide solid electrolyte prepared by the method has a heterogeneous halogen concentration gradient core-shell structure, and can improve the stability of air / water on the premise of not reducing the ionic conductivity, that is, the synergistic improvement of the ionic conductivity and the air / water stability is realized.

The application discloses a method for preparing an iron-based phosphorus sulfide array material by one-step phosphorus sulfuration and application thereof, and belongs to the technical field of humidity sensors. The application aims at solving the problems of the existing method for preparing the phosphorus sulfide iron material, i.e., the regular morphology cannot be obtained by adjusting the reactants, the synthesis method is difficult, the steps are complex, the efficiency is low, by-products are easily produced, and the synthesis raw materials are harmful to the environment. The method comprises the following steps: firstly, dissolving ferric chloride hexahydrate and anhydrous sodium sulfate in water, and immersing a carrier in the mixed solution to perform a hydrothermal reaction, so as to obtain a carrier with in-situ grown nanorod-shaped FeOOH precursors; and secondly, placing the carrier with in-situ grown nanorod-shaped FeOOH precursors and sulfur powder in one porcelain boat, placing red phosphorus in another porcelain boat, and then sequentially placing the two porcelain boats in a tube furnace for heating and heat preservation. The application is applied to the preparation of a humidity sensor.

The invention discloses an in-situ preparation method of a vanadium-doped difunctional nickel-iron-based phosphorus sulfide heterostructure and application of the vanadium-doped difunctional nickel-iron-based phosphorus sulfide heterostructure in electro-catalysis full hydrolysis, and relates to a preparation method and application of a phosphorus sulfide heterostructure. The invention aims to solve the problems that the existing efficient catalyst for electro-catalytic hydrogen evolution and oxygen evolution is expensive and rare, and the low-cost non-noble metal electro-catalyst is relatively low in catalytic activity and only can realize single-function hydrogen evolution or oxygen evolution, so that the actual application of the catalyst is hindered. The method comprises the steps of 1, foam nickel pretreatment; 2, primary hydrothermal reaction; 3, carrying out secondary hydrothermal reaction; and 4, low-temperature gas phase treatment. The invention relates to application of a vanadium-doped bifunctional nickel-iron-based phosphorus sulfide heterostructure as a bifunctional catalyst in electro-catalysis full hydrolysis. A two-step hydrothermal synthesis method and a low-temperature gas phase method are adopted, the preparation method is simple and low in cost, and a new way is developed for a bifunctional catalyst material for electro-catalytic hydrogen evolution and oxygen evolution reaction under the alkaline condition and high current density.