555results about "Sulfide conductors" 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 present invention provides a method for producing lithium hydroxide, comprising the steps of reacting lithium carbonate and calcium hydroxide in a liquid to obtain a solution containing lithium hydroxide, and performing solid-liquid separation on the solution into a liquid component containing lithium hydroxide and a solid component containing lithium derived from the lithium carbonate, and recovering lithium hydroxide from the liquid component.

The present invention relates to a method of preparing a sulfide-based solid electrolyte, which includes steps of (A) preparing a reaction mixture by grinding each of sulfide-based solid electrolyte raw materials and mixing the ground raw materials; (B) compressing the reaction mixture into a form of a pellet; and (C) preparing a sintered product by sintering the reaction mixture in the form of a pellet, and a sulfide-based solid electrolyte prepared thereby.

Provided herein are methods for synthesizing a sulfide-based solid state electrolyte, including a sulfide-based solid state electrolyte having an argyrodite phase. The methods generally include mixing an electrolyte precursor in a blend of solvents, the blend of solvents including a catalytic solvent and a spectator solvent.

To provide a method for manufacturing a sulfide solid electrolyte that suppresses discharge of N to the outside of the system in a manufacturing process of the sulfide solid electrolyte, a method for selecting a raw material compound used for manufacturing of the same, and an all-solid-state battery including the sulfide solid electrolyte; and a sulfide solid electrolyte having improved thermal stability, a method for manufacturing the same, and an all-solid-state battery including the sulfide solid electrolyte.SOLUTION: A sulfide solid electrolyte contains, as constituent elements, P, S, N, elemental A, elemental X, and elemental M, and has a crystal structure. A represents at least one element selected from the group consisting of Li, Na, and K. X represents at least one element selected from the group consisting of Cl, Br, and I. M represents at least one element selected from the group consisting of Al, Ta, Si, Sc, Mg, Nb, B, Hf, C, P, Zr, and Ti. In an all-solid-state battery 10, an anode layer 1, a solid electrolyte layer 3, a cathode layer 2, or a combination thereof contains the sulfide solid electrolyte, and this configuration leads to excellent initial coulombic efficiency.SELECTED DRAWING: Figure 2

A solid electrolyte composition including (A) a sulfide solid electrolyte including lithium, phosphorus and sulfur, and (B) one or more compounds selected from the compounds represented by the following formulas (1) to (17).R11R12R13P  (1)(NR21R22)(NR23R24)(NR25R26)P  (2)R31R32R33PS  (3)(NR41R42)(NR43R44)(NR45R46)PS  (4)R51SH  (5)R61COOR62  (6)R71NH2  (7)R81R32R33N  (8)R91(OA)nOH  (9)(R101O)(R102O)(R103O)P  (10)R111R112R113R114M1  (11)R121R122R123M2  (12)R131R132R133M3  (13)R141—C(═O)NH—R142  (14)R151R152R153C—OH  (15)R161—O—R162  (16)(SR171)(SR172)(SR173)P  (17)

To provide a method for producing a solid electrolyte, a method for producing a separator, a method for producing an electrode, and a method for producing a power storage device, the methods enabling reduction of interfacial resistance.SOLUTION: A method for producing a solid electrolyte comprises contacting an aprotic organic solvent in which an alkali metal salt is dissolved with a fracture surface of an oxide-based solid electrolyte, thereby forming on the fracture surface a surface layer derived from the alkali metal salt. A method for producing a separator, a method for producing an electrode, and a method for producing a power storage device each comprise a step of disposing a solid electrolyte obtained by the method for producing the solid electrolyte.SELECTED DRAWING: Figure 1

A positive electrode material according to an aspect of the present disclosure includes a positive electrode active material and a first solid electrolyte that coats the surface of the positive electrode active material. The first solid electrolyte contains Li, M1, O, and X1. M1 is at least one element selected from the group consisting of Nb and Ta. X1 is at least one element selected from the group consisting of Cl, Br, and I.

To provide an anode-free all-solid-state battery that is improved in discharge capacity and cycle characteristics, and also to provide an anode-free all-solid-state battery that can be driven with low constraining pressure.SOLUTION: The present disclosure provides an all-solid-state battery which includes a positive electrode including a positive electrode active material layer, a negative electrode current collector, and a solid electrolyte layer disposed between the positive electrode and the negative electrode current collector. The all-solid-state battery does not contain a negative electrode active material, lithium ions are supplied from the positive electrode active material layer by charging, a lithium metal layer as a negative electrode active material is formed on the negative electrode current collector, and the solid electrolyte layer includes a sulfide-based solid electrolyte containing a group 2 element and having an argyrodite-type crystal structure.SELECTED DRAWING: Figure 5

Provided are a method for treating a sulfur-atom-containing material including bringing at least one sulfur-atom-containing material selected from a raw material containing a sulfur atom, an electrolyte precursor containing a sulfur atom, and a sulfide solid electrolyte into contact with a liquid base oil, and bringing the resulting inclusion containing the sulfur-atom-containing material and the liquid base oil into contact with an alkaline aqueous solution, which can safely and effectively cope with the occurrence of leakage of the sulfur-atom-containing material such as a raw material, an intermediate, and a product containing a sulfur atom; an apparatus for producing the sulfur-atom-containing material; and a device and a container for transporting the sulfur-atom-containing material.

The present invention relates to a production method of a solid electrolyte in which adopting a liquid-phase method, a solid electrolyte having a high ionic conductivity, in which the generation of hydrogen sulfide is suppressed, the method including mixing a raw material inclusion containing a lithium element, a sulfur element, a phosphorus element, and a halogen element with a complexing agent containing a compound having at least two tertiary amino groups in the molecule; and an electrolyte precursor constituted of a lithium element, a sulfur element, a phosphorus element, a halogen element, and a complexing agent containing a compound having at least two tertiary amino groups in the molecule.

A solid electrolyte membrane having favorable characteristics and a method of forming the same are provided. A solid electrolyte membrane 40 is composed of a non-woven fabric (ultrafine fiber non-woven fabric) UFN and solid electrolyte particles 4AP incorporated therein. Also, the non-woven fabric UFN includes a fiber (ultrafine fiber UF) made of a resin containing a polar filler. A method of manufacturing the solid electrolyte membrane 40 includes a step of preparing the non-woven fabric UFN including a fiber made of a resin containing a polar filler, a step of applying a slurry S containing the solid electrolyte particles 4AP onto the non-woven fabric UFN, and a step of heating while pressurizing the slurry S on the non-woven fabric UFN. Further, the non-woven fabric UFN is formed by making the resin containing the polar filler be a fibrous form by a laser electrospinning method.

The present application relates to a method for manufacturing a solid electrolyte having a kesterite-type crystal structure, comprising: a mixing step of mixing raw materials so that lithium (Li), phosphorus (P), sulfur (S), oxygen (O), and halogen (X) satisfy the following formulas (11) to (14); and a heating step of heating a mixture obtained by the mixing step. 4.8 ≤ Li / P ≤ 5.3 … (11) 3.8 ≤ S / P ≤ 4.4 … (12) 0 < O / P ≤ 0.8 … (13) 1.0 < X / P ≤ 2.0 … (14) (Formula (11) is a molar ratio of Li to P, formula (12) is a molar ratio of S to P, formula (13) is a molar ratio of O to P, and formula (14) is a molar ratio of halogen (X) to P.)

A sulfide solid electrolyte according to the present invention contains a compound that has a crystal phase having an argyrodite-type crystal structure and that is represented by LiaPSbXc, where X is at least one elemental halogen, a represents a number of 3.0 or more and 6.0 or less, b represents a number of 3.5 or more and 4.8 or less, and c represents a number of 0.1 or more and 3.0 or less. The sulfide solid electrolyte has a ratio of ALi / (ALi + AP + AS + AX) to a specific surface area (m2g-1) of 3.40 (m-2g) or more, where ALi represents the amount of lithium (atom%) quantitatively determined from the Li 1s peak, AP represents the amount of phosphorus (atom%) quantitatively determined from the P 2p peak, As represents the amount of sulfur (atom%) quantitatively determined from the S 2p peak, and Ax represents the amount of halogen (atom%) quantitatively determined from the halogen peak, the peaks being exhibited in X-ray photoelectron spectroscopy (XPS).

A solid electrolyte according to one aspect of the present invention contains a lithium element, a phosphorus element, a silicon element, a sulfur element, and a halogen element, in which the molar ratio (Si / (P+Si)) of the content of the silicon element to the total content of the phosphorus element and the silicon element is 0.04-0.55 inclusive, the molar ratio (S / (P+Si)) of the content of the sulfur element to the total content of the phosphorus element and the silicon element is 3.50-4.10 inclusive, the halogen element contains at least one of a bromine element and an iodine element, and the molar ratio ((Br+I) / X) of the total content of the bromine element and the iodine element to the content of the halogen element is 0.80 or more, and the solid electrolyte has a predetermined crystal structure.

Provided is a method for producing a sulfide solid electrolyte, the method comprising mixing a starting material-containing substance containing a lithium atom, a phosphorus atom, a sulfur atom and a halogen atom in an organic solvent to produce a mixture and subjecting the mixture to irradiation with microwaves. Thus, a method for producing a sulfide solid electrolyte is provided, in which a heating temperature is decreased by employing a liquid phase method to suppress the granulation by heating and therefore a sulfide solid electrolyte that keeps the particle diameters thereof can be efficiently produced.

A method for producing a sulfide-based solid electrolyte having a desired particle size by wet pulverization is disclosed. The method includes: preparing a sulfide-based solid electrolyte material; and wet-pulverizing the sulfide-based solid electrolyte material to obtain a fine particle size. The wet pulverization uses an organic solvent as a dispersant and a ketone solvent as a dispersion stabilizer.

The invention relates to an electrolyte membrane and a manufacturing method thereof. Provided is an electrolyte membrane which exhibits high proton conductivity even at low humidity. An electrolyte membrane comprising a composite membrane provided with: a polyolefin microporous membrane which has an average pore diameter of 1-1000 nm and a porosity of 50-90%, and which can be impregnated with a solvent having a surface free energy of 28 mJ / m2 or more; the composite membrane comprises a polyolefin microporous membrane and an electrolyte, the electrolyte contains a perfluorosulfonic acid polymer with EW250-850, pores of the polyolefin microporous membrane are filled with the electrolyte, and the membrane thickness of the composite membrane is 1-20 microns.

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.

Provided is a sulfide solid electrolyte glass ceramic containing a lithium atom, a sulfur atom, a phosphorus atom, and a halogen atom and having peaks at diffraction angles (2θ) of 20.2° and 29.3° in X-ray diffractometry using CuKα line. Due to an intensity ratio (PA / PB) of a peak intensity (PA) of the peak appearing at 2θ=20.2° to a peak intensity (PB) of the peak appearing at 2θ=29.3° made into more than 1.0, the sulfide solid electrolyte glass ceramic has a high ionic conductivity and has an increased water resistance. A method for producing the sulfide solid electrolyte glass ceramic is also provided.

A method for producing lithium sulfide according to the present invention is characterized by having a raw material mixing step (S1) in which lithium sulfate and a carbon material are mixed to form a mixed raw material, and a thermal reduction step (S2) in which the mixed raw material is heat-treated in a non-oxidizing atmosphere and the lithium sulfate is thermally reduced to generate lithium sulfide, the method also being characterized in that a carbon powder having a specific surface area measured by the BET method of 55 m2 / g or greater is used as the carbon material. A method for producing a sulfide-based solid electrolyte according to the present invention is characterized in that lithium sulfide produced through the method for producing lithium sulfide according to the present invention is used as a raw material.

Provided is a crystalline sulfide solid electrolyte having a high ionic conductivity and being capable of realizing a reduction in raw material cost, which contains a lithium atom, a phosphorus atom, a sulfur atom, an oxygen atom, and a halogen atom, has diffraction peaks at 2θ = 20.3 ± 0.5° and 29.6 ± 0.6° in X-ray diffraction measurement using a CuKα line, has a peak attributable to PSO33- observed at 39.6 ± 5.0 ppm in solid-state 31P-NMR measurement, and has a composition represented by the following composition formula: (100 - y)(0.5)(Li3+2zP(S1-xOx)4+z) + (y)LiX (in which, x, y, and z satisfy 0.00060 ≤ x ≤ 0.15, 3.0 ≤ y <25.0, and -0.17 ≤ z ≤ 1.5, respectively, and X represents a halogen atom).

There is provided an inorganic solid electrolyte-containing composition containing an inorganic solid electrolyte, a polymer binder, and a dispersion medium, in which the polymer binder includes a polymer binder consisting of a fluorine-based copolymer which contains a vinylidene fluoride constitutional component and a hexafluoropropylene constitutional component of 21% to 65% by mole and in which a tensile fracture strain is 500% or more, and the adsorption rate of this polymer binder with respect to the inorganic solid electrolyte is less than 60%. There are also provided a sheet for an all-solid state secondary battery and an all-solid state secondary battery, in which this inorganic solid electrolyte-containing composition is used, and manufacturing methods for a sheet for an all-solid state secondary battery, and an all-solid state secondary battery.

The present invention relates to a sulfide-based solid electrolyte that has an ignition time of 5 or more seconds, or does not ignite, when an ignition test is performed using a prescribed test method in a dry air environment.

Provided is an inorganic solid electrolyte-containing composition containing an inorganic solid electrolyte, a polymer binder, and a dispersion medium, wherein the polymer binder: has a constituent component (X) derived from a polycondensable compound having a polycondensable group and a polymerized chain, and a constituent component (A) derived from a polycondensable compound having a specific functional group; includes a polymer having a constituent component (N) comprising a nitrogen atom and being contained in an amount of less than 10 mol% with respect to the total constituent components; and is dissolved in a dispersion medium. Also provided are an all-solid secondary battery sheet and an all-solid secondary battery using the inorganic solid electrolyte-containing composition, and methods for producing an all-solid secondary battery sheet and an all-solid secondary battery.

To provide a composition capable of reducing resistance of an electrochemical device having a sulfide solid electrolyte, a mixture for a solid battery, a sulfide solid electrolyte layer, an electrode layer, and a secondary battery.SOLUTION: A composition contains at least one of fluoropolyether represented by any one of the following formulae (1) to (3), and a sulfide solid electrolyte. Formula (1): R1-O-Ra1-Rb1-O-Ra1-R1. Formula (2): R2-Rb2-O-Ra2-Rb2-R2, and formula (3): R3-Rb3-O-Ra3-R3.SELECTED DRAWING: None

The present invention relates to coated particles each comprising a sulfide-based particle having a surface coated with a fluorine-containing organic compound. The fluorine-containing organic compound contains a structural unit (1) that is based on a specific monomer (1) and a structural unit (2) that is based on a specific monomer (2). The average particle diameter of the coated particles is 10 nm to 10 μm.

The present invention relates to a solid electrolyte comprising sulfide-based solid electrolyte particles and a lithium-metal-oxide located on the surface of the particles, wherein the half-width of the main peak in an X-ray diffraction analysis of the solid electrolyte is 0.160 or less, and a method for producing the same.

The present invention improves ion conductivity while improving water resistance. Provided is a solid electrolyte having a composition formula represented by LixMXy, wherein M is one or more elements selected from group 14 elements, X includes S, and the compositional ratio of Li, M, and X is x:1:y. The crystal structure of the solid electrolyte is hexagonal, and the volume of a hexagonal unit cell is greater than 0.0870 nm3 but less than 0.0880 nm3.

Disclosed are a sulfide-based solid electrolyte capable of having high ionic conductivity and improving the rate capability of a battery by using three types of halogen elements and adjusting the doping concentration thereof, a method for preparing the same, and an all-solid-state battery comprising the same.