Abstract: A lithium niobate with high lithium ion conductivity. Disclosed is a method for producing a lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles, the method comprising: preparing a solution containing niobium ions and lithium ions, drying the solution to obtain a lithium niobate precursor, and heating the lithium niobate precursor at a temperature of from 250° C. to 300° C. for a heating time of more than 0 minute and 10 minutes or less.

Abstract: An active material, a solid electrolyte, and a solvent are hard-kneaded to prepare a first electrode material. A dispersion promotion component is added to the first electrode material to prepare a second electrode material. Slurry containing the second electrode material is prepared. An electrode is produced by applying the slurry to a surface of a base material. A composite body is formed by the solid electrolyte adhering to a surface of the active material. The dispersion promotion component promotes dispersion of the solid electrolyte in the solvent.

Abstract: In a method for producing a coated active material, a coating layer containing niobium is formed on at least a part of a surface of an active material. The method includes: transforming a slurry containing the active material and a coating solution containing niobium into droplets to obtain slurry droplets; drying the slurry droplets in a heated gas stream to obtain a precursor; and baking the precursor. The active material that is used to obtain the slurry droplets contains less than 0.68 wt% of sulfur as an impurity.

Abstract: In a method for producing a coated active material, a coating layer containing Nb is formed on at least a part of a surface of an active material. The method includes: transforming a slurry containing the active material and a coating solution containing Nb into droplets to obtain slurry droplets; drying the slurry droplets in a heated gas stream to obtain a precursor; and baking the precursor. When obtaining the slurry droplets, a temperature of the slurry before the slurry is transformed into droplets is 5° C. or more and less than 25° C.

Abstract: A main object of the present disclosure is to provide a coated active material capable of reducing a battery resistance. The present disclosure achieves the object by providing a coated active material comprising: an active material including Ni, and a coating layer configured to coat at least a part of a surface of the active material, and a NiO layer is formed between the active material and the coating layer, and an average thickness of the NiO layer is 0.9 nm or less.

Abstract: Disclosed is a method in which both the suppression of granulation of an active material and the acceleration of production steps are achieved when producing an electrode mixture containing a coated active material. The method comprises dropletizing a slurry containing an active material and a coating liquid to obtain slurry droplets, gas-flow drying the slurry droplets in a heating gas to obtain a first and a second precursor, and firing the first and the second precursor to obtain a first and second particle, wherein the first precursor contains the active material and a component from the coating liquid, the second precursor is free of the active material and contains a component from the coating liquid, the first particle has the active material and a coating layer, and the second particle is free of the active material and contains a component same as that constituting the coating layer.

Abstract: Provided is a lithium-containing oxide precursor solution for coating an electrode active material that is capable of improving the coverage of a coating layer that is formed by applying the lithium-containing oxide precursor solution to the surface of powder of the electrode active material and king it, and that is easy to handle in a normal atmosphere because a solution composed mainly of water is used as a solvent. The lithium-containing oxide precursor solution for coating an electrode active material includes Li in an amount of 0.1 mass % or more and 5.0 mass % or less, at least one element selected from Nb, F, Fe, P, Ta, V, Ge, B, Al, Ti, Si, W, Zr, Mo, S, Cl, Br, and I in an amount of 0.05 mass % or more and 35 mass % or less, and water in an amount of 60 mass % or more and 98.4 mass % or less. The value of absorbance of the solution at a wavelength of 660 nm is 0.1 or less, and the value of surface energy thereof is 72 mN/m or less.

Abstract: Provided are a coated active material having excellent properties that can reduce the reaction resistance of a battery, and a method for producing a coated active material that can achieve both a high processing speed and high processing quality. The method for producing a coated active material includes: mixing an electrode active material and a coating solution containing Li and an element M and having a surface energy of 72 mN/m or less to prepare a slurry; and drying the slurry in an air flow and thereby causing a Li-containing oxide to adhere to at least a portion of the surface of the electrode active material, to obtain a coated active material, where the element M is at least one element selected from Nb, F, Fe, P, Ta, V, Ge, B, Al, Ti, Si, W, Zr, Mo, S, Cl, Br, and I.

Abstract: A lithium niobate with high lithium ion conductivity. Disclosed is a method for producing a lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles, the method comprising: preparing a solution containing niobium ions and lithium ions, drying the solution to obtain a lithium niobate precursor, and heating the lithium niobate precursor at a temperature of from 250° C. to 300° C. for a heating time of more than 0 minute and 10 minutes or less.

Abstract: A method for producing a coated active material includes dropletizing a slurry to obtain slurry droplets wherein the slurry contains an active material and a coating liquid, gas-flow drying the slurry droplets in a heating gas to obtain a precursor, and firing the precursor.

Abstract: Provided is a powder conveying system configured to prevent moisture adsorption to powder during powder conveyance. The powder conveying system comprises: a conveying path, a conveying device wherein the conveying device is a part of the conveying path or is connected with the conveying path; a measuring device wherein the measuring device is a part of the conveying path or is connected with the conveying path; a controlling device wherein the controlling device is a part of the conveying path or is connected with the conveying path; and a judging device wherein the judging device is connected with the measuring device and the controlling device.

Abstract: In attaching a cover, the cover is attached to a placement jig such that positioning pins of the placement jig are respectively passed through a first bolt insertion portion and a second bolt insertion portion of the cover. In placing the cover, the cover is placed at a placement position on a first surface of a storage body such that the positioning pins of the placement jig to which the cover is attached are respectively inserted into a first fastening hole and a second fastening hole of the storage body.

Abstract: A lithium niobate with high lithium ion conductivity. Disclosed is a method for producing a lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles, the method comprising: preparing a solution containing niobium ions and lithium ions, drying the solution to obtain a lithium niobate precursor, and heating the lithium niobate precursor at a temperature of from 250° C. to 300° C. for a heating time of more than 0 minute and 10 minutes or less.

Abstract: Provided is a powder conveying system configured to prevent moisture adsorption to powder during powder conveyance. The powder conveying system comprises: a conveying path, a conveying device wherein the conveying device is a part of the conveying path or is connected with the conveying path; a measuring device wherein the measuring device is a part of the conveying path or is connected with the conveying path; a controlling device wherein the controlling device is a part of the conveying path or is connected with the conveying path; and a judging device wherein the judging device is connected with the measuring device and the controlling device.

Abstract: In attaching a cover, the cover is attached to a placement jig such that positioning pins of the placement jig are respectively passed through a first bolt insertion portion and a second bolt insertion portion of the cover. In placing the cover, the cover is placed at a placement position on a first surface of a storage body such that the positioning pins of the placement jig to which the cover is attached are respectively inserted into a first fastening hole and a second fastening hole of the storage body.

Abstract: An ionic liquid which contains an organic matter represented by the following general formula (1) as a cation component. The ionic liquid is stably in a liquid state over a wide temperature range and is excellent in electrochemical stability. The ionic liquid is advantageously used for applications such as electric power storage devices, lithium secondary batteries, electrical double layer capacitors, dye-sensitized solar cells, fuel cells, and reaction solvents.

Abstract: An ionic liquid which contains an organic matter represented by the following general formula (1) as a cation component. The ionic liquid is stably in a liquid state over a wide temperature range and is excellent in electrochemical stability. The ionic liquid is advantageously used for applications such as electric power storage devices, lithium secondary batteries, electrical double layer capacitors, dye-sensitized solar cells, fuel cells, and reaction solvents.