61results about "Oxide conductors" patented technology

The present invention provides a light-transmitting conductive film suitable for reducing resistance and suppressing yellowing, a transparent conductive film equipped with the light-transmitting conductive film, and an article with the transparent conductive film. [Solution] The light-transmitting conductive film 20 contains an indium-containing conductive oxide and includes a first region 21 in at least a portion of its thickness that contains krypton in a content ratio of less than 0.1 atomic percent. The light-transmitting conductive film 20 also contains an indium-containing conductive oxide and includes a second region 22 in at least a portion of its thickness that does not contain krypton.

A technique that can improve ionic conductivity is provided.An electrolyte includes an inorganic composite particle that is a composite of an inorganic particle with a compound having a betaine structure and one or more functional groups selected from a (meth)acryloxy group, a Si(OR)3 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms), and an Al(OR)2 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms).

To provide a positive electrode active material with high capacity and good cycle characteristics. [Solution] The positive electrode active material is designed to show little change in its crystal structure between the charged and discharged states. For example, in the discharged state, it has a layered rock salt-type crystalline structure, and when charged with a high voltage of about 4.6V... In its state, the positive electrode active material having a pseudo-spinel type crystal structure is more responsive than known positive electrode active materials. The crystal structure and volume change little before and after discharge. When analyzed by XRD, 2θ = 19.30 ± 0.20° and 2θ = 45.55 ± 0 A diffraction peak occurs at 0.10°.

It has a fine particle size suitable for electrolyte membrane fabrication, and is made of BaSc 0.8 Mo 0.2 O 3-δ The present invention provides proton-conducting composite oxide powders with a high content of [a specific substance] and methods for producing the same. [Solution] The proton-conducting composite oxide powder of the present invention is BaSc x M 1-x O 3-δ The present invention provides a method for producing a proton-conducting composite oxide powder that contains 60% by volume or more of the composite oxide represented by the formula, and has an average particle size of 0.05 μm or less. The present invention provides a method for producing a proton-conducting composite oxide powder that includes a precipitation step of adding at least one aqueous solution of a hydrochloric acid-based aqueous solution and a nitric acid-based aqueous solution, which has a pH of less than 2 and contains Ba ions, Sc ions, and ions of element M (M is one or more elements selected from Mo and W), to an alkaline aqueous solution to adjust the pH of the alkaline aqueous solution to 10 or more and less than 14 to obtain a precipitate, or a precipitation step of adding at least one aqueous solution of a hydrochloric acid-based aqueous solution and a nitric acid-based aqueous solution, which has a pH of less than 2 and contains Ba ions and Sc ions, to an alkaline aqueous solution, which has a pH of less than 14 to adjust the pH of the alkaline aqueous solution to 10 or more and less than 14 to obtain a precipitate, a drying step of drying the precipitate at a predetermined temperature to obtain a precursor powder, and a calcination step of calcining the precursor powder at a temperature of 700°C or higher.

An object of the present invention is to provide a lithium-based solid electrolyte having excellent ion conductivity, a method for producing a lithium-based solid electrolyte, a modified positive electrode active material, a modified negative electrode active material, an all-solid-state secondary battery, an electrode sheet for an all-solid-state secondary battery, a solid electrolyte sheet, and an electrode for an all-solid-state secondary battery.The lithium-based solid electrolyte of the present invention contains amorphous lithium tetraborate, water, and a lithium salt, in which a content of the water is 45% by mass or less with respect to a total mass of the lithium-based solid electrolyte.

A polymer electrolyte exhibits high mechanical strength and high ionic conductivity even at high temperatures and can minimize the occurrence of dendrites at the interface between a polymer electrolyte and a battery negative electrode. The polymer electrolyte contains a polymer having a specific free terminal polyether structure, a specific cross-linked polyether structure, and a specific fluorosulfonylimide anion group; the polymer electrolyte contains a specific amount of a specific alkali metal salt; and the volume swelling ratio of the polymer electrolyte, determined by a methyl ethyl ketone immersion method, is 30% to 120%.

A method for producing a solid electrolyte having a pyrochlore-type crystal structure containing alkali metals, lanthanides, at least one specific element from transition elements, group 13 elements, group 14 elements, or group 15 elements, and halogen elements, comprising a mixing step (S11, S14, S21) for mixing a plurality of raw materials for the solid electrolyte to produce a raw material mixture, and a firing step (S12, S15, S22) for heating and firing the raw material mixture at a predetermined temperature. The raw materials include alkali metal compounds, lanthanide compounds, and specific element compounds. When the specific surface area of ​​the alkali metal compound is S1, the specific surface area of ​​the specific element compound is S2, and the specific surface area of ​​the lanthanide compound is S3, the relationships S1 / S2≦50 and S3 / S2≧0.01 exist.

Provided are a conductive particle with low powder resistance and excellent stability comprising a core, a conductive layer formed on the core, and a metal oxide layer formed on the conductive layer; an anisotropic conductive material comprising the conductive particle; and a connection structure.

The present invention relates to a lithium-lanthanum zirconium composite oxide solid electrolyte doped on the grain boundary and surface, and its preparation method and application. By using a stepwise doping method, some doping elements are located on the grain boundary and surface of the lithium-lanthanum zirconium composite oxide solid electrolyte, improving the distribution state of the doping elements on the grain boundary, reducing the number of grain boundaries, reducing the grain boundary resistance of the lithium-lanthanum zirconium composite oxide, and making it obtain high ionic conductivity. The doping method used has the advantages of simple process, low cost and high versatility, can meet the demand for doping elements of different solid electrolytes, and is suitable for large-scale application. The solid electrolyte obtained by adopting the technical solution of the present invention can be used in the fields of all-solid-state lithium metal or lithium ion batteries, semi-solid lithium ion batteries, lithium air batteries, etc.

The present invention provides a method for producing an acid-fluoride-based solid electrolyte having good ionic conductivity (bulk ionic conductivity) and a method for producing an all-solid-state lithium-ion battery. [Solution] The process involves crushing and mixing raw materials to produce a raw material mixture 1, placing the raw material mixture 1 in a firing container and firing it at 800-1200°C to produce an oxide, adding two raw materials, LiF and LaF3, to the oxide, crushing and mixing them to produce a raw material mixture 2, and firing the raw material mixture 2 at 850-1000°C in a firing container mainly containing SiC, Si3N4, ZrO2, or C, thereby producing a material with the composition formula: Li 2-x La (1+x) / 3 A method for producing an acid fluoride-based solid electrolyte, comprising the steps of: producing an acid fluoride-based solid electrolyte having a lattice constant of 10.436 Å or greater, represented by the formula M2O6F (wherein M is at least one of Nb and Ta, and 0 ≤ x ≤ 1.0).

The present invention addresses the problem of providing: a lithium-based solid electrolyte which has excellent ion conductivity; a method for producing a lithium-based solid electrolyte; a modified positive electrode active material; a modified negative electrode active material; an all-solid-state secondary battery; an electrode sheet for all-solid-state secondary batteries; a solid electrolyte sheet; and an electrode for all-solid-state secondary batteries.　A lithium-based solid electrolyte according to the present invention contains lithium tetraborate in an amorphous state, water and a lithium salt. With respect to this lithium-based solid electrolyte, the content of water is 45% by mass or less relative to the total mass of this lithium-based solid electrolyte.

To provide a sulfide-based solid electrolyte that may suppress the decrease in ionic conductivity and improve ionic conductivity maintenance rate (atmospheric stability).SOLUTION: One embodiment of the present invention provides a solid electrolyte which has an argyrodite crystal structure and contains lithium, phosphorus, sulfur, element M, oxygen, and halogen elements, where the element M is at least one selected from elements (M2) with an oxidation number of 2+ and elements (M6) with an oxidation number of 6+, a substitution rate DS1 (%) of the element M represented by Relational Formula 1 is 0.1 to 1%, and a substitution rate DS2 (%) of the oxygen represented by Relational Formula 2 is 0.15% to 2%.SELECTED DRAWING: None

Provided is a method for evaluating oxidation resistance of a sulfide solid electrolyte containing a lithium (Li) element and a sulfur (S) element. In the present invention, direct current resistance or alternating current impedance of a mixture of the sulfide solid electrolyte and an oxide of nickel, manganese, or cobalt is measured over time; and oxidation resistance of the sulfide solid electrolyte is evaluated on the basis of a change over time in said resistance or said impedance. The oxide of nickel preferably contains NiO2. The oxide of manganese preferably contains MnO2. The oxide of cobalt preferably contains CoO2.

A proton-conductive composite oxide powder according to the present invention contains 60 vol% or more of a composite oxide represented by BaScxM1-xO3-δ, and has an average particle diameter of 0.05 μm or less. A method for producing a proton-conductive composite oxide powder according to the present invention comprises: a precipitation step for adding, to an alkaline aqueous solution, at least one aqueous solution of a hydrochloric acid-based aqueous solution and a nitric acid-based aqueous solution which contain Ba ions, Sc ions, and ions of an M element (M is at least one element selected from Mo and W) and have a pH of less than 2, and adjusting the pH of the alkaline aqueous solution to 10 or more to less than 14 to obtain a precipitate, or a precipitation step for adding, to an alkaline aqueous solution containing ions of an M element (M is at least one element selected from Mo and W), at least one aqueous solution of a hydrochloric acid-based aqueous solution and a nitric acid-based aqueous solution which contain Ba ions and Sc ions and have a pH of less than 2, and adjusting the pH of the alkaline aqueous solution to 10 or more to less than 14 to obtain a precipitate; a drying step for drying the precipitate at a prescribed temperature to obtain a precursor powder; and a sintering step for sintering the precursor powder at a temperature of 700°C or higher. With the present invention, it is possible to provide a proton-conductive composite oxide powder which has a fine particle size that is suitable for producing an electrolyte membrane, and has a high content of BaSc0.8Mo0.2O3-δ, and a method for producing said proton-conductive composite oxide powder.

To provide a sintered body having a cubic garnet type structure lithium metal oxide sintered at a temperature of 900°C or lower capable of being integrally sintered with an electrode and excellent in ionic conductivity, a solid electrolyte using the sintered body, an all-solid-state lithium-ion battery, and a method for manufacturing the sintered body, the solid electrolyte, and the all-solid-state lithium-ion battery.SOLUTION: Disclosed is a sintered body which includes particles comprising a lithium metal oxide of a cubic garnet structure represented by Li7-aLa3 A2O12 where the parameter a satisfies 0≤a≤0.9, and the element A is at least one element selected from the group consisting of Zr, Ta, Hf, Sn, Nb, Ti, V, Bi, Mo, and W, and lithium hydroxide located at grain boundaries of the particles. A volume ratio of the lithium metal oxide to the total of the lithium metal oxide and lithium hydroxide is in the range of 50 vol% or more and 95 vol% or less.SELECTED DRAWING: Figure 1

A method for producing a solid electrolyte that has a pyrochlore-type crystal structure and contains an alkali metal, a lanthanoid, at least one specific element selected from transition elements, group 13 elements, group 14 elements, and group 15 elements, and a halogen element, the method comprising: mixing steps (S11, S14, S21) for mixing a plurality of raw materials of the solid electrolyte to produce a raw material mixture; and firing steps (S12, S15, S22) for heating the raw material mixture at a prescribed temperature to fire the mixture. The raw materials include an alkali metal compound, a lanthanoid compound, and a specific element compound. When S1 is defined as the specific surface area of the alkali metal compound, S2 is defined as the specific surface area of the specific element compound, and S3 is defined as the specific surface area of the lanthanoid compound, the relationships S1 / S2 ≤ 50 and S3 / S2 ≥ 0.01 hold true.

A ceramic composite particle includes a ceramic particle (141) and a coating layer (142) that covers at least a part of a surface of the ceramic particle and contains two or more phases. The coating layer contains a first phase (142a) composed of an oxide-based ion conductor and a second phase (142b) composed of an amorphous-phase-containing ion conductor containing an amorphous phase. The first phase has higher ionic conductivity than that of the second phase. The second phase has a lower Young's modulus than that of the first phase.

Provided are coated aluminum oxide particles having sufficient electric conductivity, and a method for manufacturing same. An antimony-doped tin oxide is contained in the surfaces of the aluminum oxide particles, such that the contained amount of an antimony component with respect to a tin component is 26-45 mass % when expressed as oxides as (Sb2O3 / SnO2). To a dispersion liquid containing aluminum oxide particles and a solvent, an alkali and a hydrochloric acid solution, containing an antimony component and a tin component such that the components are contained at an amount of 26-45 mass % when expressed as oxides as (Sb2O3 / SnO2), are mixed to cause a tin hydroxide that contains the antimony component to be deposited on the surfaces of the aluminum oxide particles. Then, the aluminum oxide particles are baked at a temperature of 400-800° C. so as to be coated with an antimony-doped tin oxide.

A technique that can improve ionic conductivity is provided. An electrolyte includes an inorganic composite particle that is a composite of an inorganic particle with a compound having a betaine structure and one or more functional groups selected from a (meth)acryloxy group, a Si(OR)3 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms), and an Al(OR)2 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms).

An oxide ion–conducting solid electrolyte comprising: a mayenite compound having a typical composition represented by Ca12Al14O33; and a crystal phase of cerium oxide (CeO2).

Described is a cable comprising a plurality of high temperature superconductor (HTS) components, a plurality of electrically conductive segments extending along a length of the cable, each of the plurality of electrically conductive segments comprising one of the plurality of HTS components, and an electrically insulating material arranged between adjacent ones of the plurality of electrically conductive segments.

An electrode (12) and a storage device (11) are provided to reduce the decrease in fluidity during manufacturing. The electrode contains an oxide-based solid electrolyte, which is a powder (19) with a garnet-type crystal structure. The powder has a cubic crystal system and a lattice constant of 1.3 nm or more. The distance between atoms octahedral and dodecahedral coordinated with oxygen in the unit lattice of the powder can be 0.588 nm or more. The solid electrolyte may contain Li, La, Zr, Mg, and Sr as components. The storage device contains the electrode.

The present disclosure is a manufacturing device and a manufacturing method for a positive electrode active material for a lithium-ion secondary battery. Provided is a manufacturing device for a positive electrode active material for a lithium-ion secondary battery, which is capable of improving productivity, the manufacturing device comprising a conveying unit and a heating section, the conveying unit conveying a positive electrode active material, the positive electrode active material comprising a lithium compound and a metal compound, the metal compound comprising at least one metal element selected from nickel, cobalt, and manganese, the heating section heating the positive electrode active material, the heating section having at least one heating unit, the heating unit heating the positive electrode active material by heat conduction, the conveying unit having a conveying member that conveys the positive electrode active material, the heating unit heating the positive electrode active material across the conveying member, the conveying member having a positive electrode active material holding section at an end portion in a width direction.

The application discloses nano-ruthenium dioxide and a preparation method thereof, and belongs to the technical field of materials. The preparation method is a homogeneous hydrothermal method for preparing the product. By setting parameters of a reaction system, the nano-ruthenium dioxide product with high yield, high purity, high specific surface area and high crystallinity can be prepared in a short time.

A solid electrolyte laminate is capable of realizing a solid-state secondary battery capable of suppressing a short circuit during charging with a large amount of current and / or suppressing a decrease of a battery capacity even when a charge and discharge cycle is repeatedly performed. A solid electrolyte laminate in which three or more electrolyte layers containing a solid electrolyte are laminated, comprising a first electrolyte layer having a support, and a second electrolyte layer and a third electrolyte layer disposed so as to sandwich the first electrolyte layer and having no support, in which a film thickness of the second electrolyte layer is 1.5 to 5 times as large as a film thickness of the third electrolyte layer.

The present disclosure provides a lithium-ion battery material, a method for preparing the same, and its use. The structural formula of the lithium-ion battery material is Li4ZrF 8-2X O X where X satisfies 0 < X ≤ 0.15. The present disclosure can significantly improve the ionic conductivity of the Li4ZrF8 material by performing oxygen doping on the Li4ZrF8 material with a zirconium-containing oxide and performing oxygen doping at the F site. Li4ZrF 8-2X O X When the material is used in a lithium-ion battery, it reacts with water molecules in the electrolyte to generate hydroxyl groups, and then contributes to reducing the moisture in the electrolyte.

The solid electrolyte material disclosed herein contains Li, M, Al, O and X, wherein M is selected from at least one of Ta and Nb, and X is selected from at least one of F, Cl and Br.

To provide a lithium complex oxide improved in terms of life characteristics and capacity characteristics by maintaining a predetermined relationship with a mole fraction of nickel in an active material and a mass ratio between first particles and second particles and controlling a full width at half maximum value in XRD measurement to be within a predetermined range.SOLUTION: A lithium complex oxide includes a mixture of first particles of n1 (n1>40) aggregated primary particles and second particles of n2 (n2≤20) aggregated primary particles, and is represented by the composition shown in the following formula: LiaNixCoyMnzM1-x-y-zO2, wherein M is selected from: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and combinations thereof, 0.9≤a≤1.3, 0.6≤x≤1.0, 0.0≤y≤0.4, 0.0≤z≤0.4, and 0.0≤1-x-y-z≤0.4.SELECTED DRAWING: Figure 1

One aspect of the present disclosure provides an ion conductive substance containing an alkali metal element, a divalent metal element D, a trivalent or higher valent metal element M, and a halogen element, having a cubic crystal structure, wherein in an X-ray diffraction chart obtained by measurement using a CuKα ray at 25°C, when a diffraction peak having a largest peak height observed in a range where a 20 angle is 45 to 53° is defined as a diffraction peak B, and a diffraction peak having a largest peak height observed in a range where a 20 angle is 33 to 38° is defined as a diffraction peak A, a ratio of a peak height of the diffraction peak A to a peak height of the diffraction peak B is 0.80 to 2.50.