329results about "Sulfide conductors" patented technology

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)

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.

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 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.

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.

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.

A method for producing a sulfide solid electrolyte composite includes: adding a metal compound to a solution containing at least one sulfide solid electrolyte raw material and dispersing the metal compound or a compound derived from the metal compound to obtain a metal dispersion liquid; removing a solvent of the metal dispersion liquid to obtain a composite powder of the metal compound or the compound derived from the metal compound and the sulfide solid electrolyte raw material; and obtaining the sulfide solid electrolyte composite using the composite powder.

Provided is a solid electrolyte material (SE) which is used for a solid-state battery having further excellent performance. The solid electrolyte material (SE) has solid electrolyte particles (1) and coating parts (2) provided on the surfaces of the solid electrolyte particles (1). The coating parts (2) each contain Li2+x(OH)1-xY (0≤x<1) (where Y is chlorine, bromine, or iodine).

The present invention provides a solid electrolyte material that can suppress a decrease in filling efficiency. [Solution] A solid electrolyte material comprising a sulfide solid electrolyte containing lithium, sulfur, and phosphorus, and an organic compound, wherein the organic compound has two or more benzene rings, and the melting point of the organic compound is 82°C or lower.

A solid electrolyte material of the present disclosure includes: Li; M; O; X; and S. The M is at least one selected from the group consisting of Ti, Zr, and Hf. The X is at least one selected from the group consisting of F, Cl, Br, and I. A molar ratio of the O to the X is more than 0 and 0.3 or less. A battery 1000 of the present disclosure includes: a positive electrode 201; a negative electrode 203; and an electrolyte layer 202 provided between the positive electrode 201 and the negative electrode 203. At least one selected from the group consisting of the positive electrode 201, the negative electrode 203, and the electrolyte layer 202 includes the solid electrolyte material of the present disclosure.

Disclosed is a solid argyrodite electrolyte doped with fluorine (F). In some embodiments, the argyrodite electrolyte has a formula (I), Li7-nPS6-nHan-xFx (I), wherein Ha is a halogen element other than fluorine (F), 0.02 ≤ x < 0.1, and 1.0 < n < 2.0. In some embodiments, 1.2 ≤ n ≤ 1.6. In some embodiments, 0.02 ≤ x ≤ 0.08. In some embodiments, the ASSB comprising the solid argyrodite electrolyte exhibits an increased CCD and an improved electrochemical performance.

According to the present invention, it is possible to provide a method for producing an LGPS-based solid electrolyte, the method being characterized by comprising: a step for preparing Li3PS4 powder, or a step for producing Li3PS4 powder from at least Li2S and P2S5; and a step for removing impurities in the Li3PS4 powder by adding, to the Li3PS4 powder, a solvent in which sulfur is contained in an amount of 0.1-1.75 mass% in an organic solvent.

Traction battery (10) for a motor vehicle, characterized by the following features: - a first layer (11) of Li6PS5Cl, - an inner second layer (12) of a superionic lithium-ion conductor and - a third layer (13) of Li6PS5Cl.

A solid-state battery according to one embodiment of the present disclosure provides a sulfide solid electrolyte that contains at least Li, Sn, S, and O, and has a tetragonal crystal structure.

The present invention relates to a solid electrolyte powder to be used in a lithium-ion all-solid-state battery, the volumetric grain size distribution in the solid electrolyte powder having a first peak within the grain size range of 0.5-0.7 μm and having a second peak within the grain size range of 1-3 μm.

To provide a solid electrolyte capable of improving ion conductivity.SOLUTION: Wherein the molecular crystal includes a sulfolane-based compound and 112233, - hexafluoropropane-1, 3-disulfonimide lithium (LiCFSA) as a lithium salt, and the inorganic filler is SiO2, A normalized surface area WA (1g / gSE) of the inorganic filler is 15 to m2 / gSE, where W (g / gSE) is a mass of the inorganic filler with respect to m2 of the inorganic filler, and A (900m2 / g) is a specific surface area of the inorganic filler.SELECTED DRAWING: Figure 1

A method for producing a sulfide solid electrolyte includes: charging sulfide solid electrolyte raw materials into a heated furnace and performing mixing to obtain a mixture of sulfide solid electrolyte raw materials, or charging a mixture of sulfide solid electrolyte raw materials into a heated furnace; and heating and melting the mixture of sulfide solid electrolyte raw materials, and cooling and solidifying resulting melt to obtain a sulfide solid electrolyte. The mixture of sulfide solid electrolyte raw materials includes Li2S and P2S5, and A≥50 μm and B≥50 μm are satisfied, where A is a volume-based average particle diameter of the Li2S as measured by using a laser diffraction particle size distribution measurement method, and B is a volume-based average particle diameter of the P2S5 as measured by using the laser diffraction particle size distribution measurement method.

To provide a method for producing a sulfide inorganic solid electrolyte material, which can stably yield a sulfide inorganic solid electrolyte material with improved lithium ion conductivity.SOLUTION: A method for producing a sulfide inorganic solid electrolyte material includes the step of mechanically treating a source composition of a sulfide inorganic solid electrolyte material comprising lithium sulfide and a phosphorus sulfide composition, to initiate a chemical reaction in each component for vitrification, resulting in a sulfide inorganic solid electrolyte material in a vitreous state. The phosphorus sulfide composition 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 from X-ray diffraction analysis.SELECTED DRAWING: None

To provide a sulfide solid electrolyte material, capable of achieving both high lithium ion conductivity and stability against moisture, at a higher level.SOLUTION: A sulfide-based inorganic solid electrolyte material of the present invention contains, as constituent elements, lithium, phosphorus, and sulfur. A molar ratio (S / P) of the content of the sulfur (S) to the content of the phosphorus (S) is equal to or more than 3.7 and less than 4.0, and a molar ratio (Li / P) of the content of the lithium (Li) to the content of the phosphorus (P) is equal to or more than 2.8 and less than 3.0. In a spectrum obtained by X-ray diffraction using CuKα ray as a radiation source, the sulfide-based inorganic solid electrolyte material has diffraction peaks at a position (A) of a diffraction angle 2θ=17.5±0.3°, at a position (B) of a diffraction angle 2θ=18.8±0.3°, at a position (C) of a diffraction angle 2θ=25.8±0.3°, and at a position (D) of a diffraction angle 2θ=29.4±0.3°, respectively.SELECTED DRAWING: None

A battery includes a first electrode, a second electrode, and a solid electrolyte layer disposed between the first electrode and the second electrode, in which the first electrode includes a current collector and an active material layer disposed between the current collector and the solid electrolyte layer, and the active material layer contains Bi as a main component of an active material.

The present disclosure addresses the problem of providing a means capable of improving lithium ion conductivity in a lithium secondary battery. Provided is a lithium ion conductive composite electrolyte containing a sulfide solid electrolyte, and a mixed salt containing first anions, second anions, and lithium ions.

Provided is a method for producing a sulfide. The sulfide contains Li, P, S, and M as main constituent elements, M being at least one selected from Ge and Sn. The method for producing a sulfide, which is a liquid-phase synthesis method with which it is possible to reduce the amount of organic solvent used, comprises: a first step for obtaining a first solution by adding an Li source, an S source, and an M source to an aqueous solvent in which the amount of an organic solvent is 50 wt% or less; a second step for obtaining a second solution by adding P2S5 as a P source to the first solution; and a third step for removing the aqueous solvent in the second solution and performing crystallization by heat treatment.

The present invention relates to a sulfide solid electrolyte which is used for lithium ion secondary batteries and contains a crystal phase and anions, wherein: the crystal phase contains an argyrodite crystal that contains Li, P, S and Ha (Ha is F, Cl, Br and / or I); the anions comprise oxide anions that have a P-O bond; at least some of the anions are polyanion structures that are different from the anions that constitute the argyrodite crystal; if the overall composition thereof is expressed by LiaMSbHacOx (wherein M represents at least one element including P, the at least one element being selected from the group consisting of group 2-15 metal elements of the periodic table and semimetal elements), 4 < a < 7, 3 < b < 6, 0 < c < 2, 0 < x and 3 < (b + c) < (6 – (x / 2)) are satisfied; and 60% or more of the total content of O is bonded to M.