Abstract: A method for producing a halide includes heat-treating a mixed material in an inert gas atmosphere, the mixed material being a mixture of (NH4)aMX3+a and LiZ. The M includes at least one element selected from the group consisting of Y, a lanthanoid, and Sc. The X is at least one element selected from the group consisting of Cl, Br, I, and F. The Z is at least one element selected from the group consisting of Cl, Br, I, and F. Furthermore, 0<a?3 is satisfied.

Abstract: A coated active material of the present disclosure includes: an active material; and a coating layer including a first solid electrolyte and coating at least a portion of a surface of the active material, wherein the first solid electrolyte includes a fluoride, and a mass of the coating layer that falls off the active material by dispersing the coated active material in an organic dispersion medium is less than 42% of a total mass of the coating layer.

Abstract: A solid electrolyte composition of the present disclosure including a solvent, an active material, and a solid electrolyte, is powdery or clayey, in which the active material and the solid electrolyte form a composite. A solid content ratio of the solid electrolyte composition is, for example, 72 mass % or more and 88 mass % or less. An electrode slurry is obtainable by adding a solvent to the solid electrolyte composition. An electrode and a battery can be produced using the electrode slurry.

Abstract: Provide is a solid electrolyte material represented by a composition formula LiaYbMcX6-dFd, where M includes at least one kind selected from the group consisting of metalloid elements and metal elements other than Li and Y; X is at least one kind selected from the group consisting Cl, Br, and I; 0<a; 0<b; 0?c; and 0<d<6.

Abstract: An electrolyte material is represented by Li4-3a-cbAlaMbFxClyBr4-x-y, wherein M is at least one selected from the group consisting of Mg, Ca, and Zr; c represents a valence of M; and the following five inequalities are satisfied: 0<a<1.33, 0?b<2, 0<x<4, 0?y<4, and (x+y)?4.

Abstract: A production method for producing a halide includes heat-treating, in an inert gas atmosphere, a mixed material in which LiX, YZ3, and at least one of LiX? or YZ?3 are mixed, where X is an element selected from the group consisting of Cl, Br, and I; Z is an element selected from the group consisting of Cl, Br, and I and different from X; X? is an element selected from the group consisting of Cl, Br, and I and different from either X or Z; and Z? is an element selected from the group consisting of Cl, Br, and I and different from either X or Z. In the heat-treatment, the mixed material is heat-treated at higher than or equal to 200° C. and lower than or equal to 650° C.

Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. The conductive material includes a first conductive material having an average long-axis diameter of 1 ?m or more and a second conductive material having an average particle diameter of more than 23 nm and 100 nm or less. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. A battery according to the present disclosure includes a positive electrode including the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.

Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. In the positive electrode material, 30?X?80 is satisfied, where X is a value determined by the following equation (1): X=A×B Equation (1). In the equation (1), A is a BET specific surface area (m2/g) of the conductive material, and B is a ratio (%) of a mass (g) of the conductive material to a mass (g) of the positive electrode active material.

Abstract: A solid-electrolyte material includes Li, Y, X, O, and H. X is at least two elements selected from the group consisting of F, Cl, Br, and I.

Abstract: A halide solid electrolyte material according to the present disclosure is represented by the chemical formula Li6-4b+2ab(Zr1-aMa)bX6 (I), wherein M denotes at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, X denotes at least one halogen element, and two mathematical formulae 0<a<1 and 0<b<1.5 are satisfied.

Abstract: A production method for producing a halide includes heat-treating, in an inert gas atmosphere, a mixed material in which LiCl and YCl3 are mixed. In the heat-treatment, the mixed material is heat-treated at higher than or equal to 200° C. and lower than or equal to 650° C.

Abstract: Provided is a solid electrolyte material represented by the following composition formula (1): Li6-3dYdX6??Formula (1) where X is two or more kinds of elements selected from the group consisting of Cl, Br, and I; and 0<d<2.

Abstract: A solid-electrolyte material includes Li, Y, O, and X. X is at least two elements selected from the group consisting of F, Cl, Br, and I.

Abstract: An electrode material has a solid concentration of 72% or more. It includes a composite particle, a sulfide solid electrolyte, and a solvent. The composite particle includes an active material and a fluoride solid electrolyte. The fluoride solid electrolyte covers at least part of a surface of the active material. The sulfide solid electrolyte is adhered to the composite particle.

Abstract: A method for producing a halide includes heat-treating a mixed material in an inert gas atmosphere, the mixed material being a mixture of M2O3, NH4X, and LiZ. The M includes at least one element selected from the group consisting of Y, a lanthanoid, and Sc. The X is at least one element selected from the group consisting of CI, Br, I, and F. The Z is at least one element selected from the group consisting of CI, Br, I, and F.

Abstract: An electrode material has a solid concentration of 72% or more. It includes a composite particle, a sulfide solid electrolyte, and a solvent. The composite particle includes an active material and a fluoride solid electrolyte. The fluoride solid electrolyte covers at least part of a surface of the active material. The sulfide solid electrolyte is adhered to the composite particle.

Abstract: A solid electrolyte material according to the present disclosure is represented by the chemical formula Li6?4b+ab(Zr1?aMa)bX6 (I). M denotes at least one element selected from the group consisting of Al, Ga, Bi, Sc, Sm, and Sb, X denotes at least one halogen element, and the two mathematical formulae 0<a<1 and 0<b<1.5 are satisfied.

Abstract: A fastener monitoring device monitoring a fastener of a track on which a railroad car runs includes a processing unit calculating a total number of fastening of the fastener or a total number of detachment of the fastener per unit length of the track as an index value indicating a fastening state of the fastener in the track based on running data of the railroad car and fastening state data of the fastener during running of the railroad car.

Abstract: An electrode material comprises a composite particle. The composite particle includes a core particle and a covering layer. The covering layer covers at least part of a surface of the core particle. The core particle includes an active material. The covering layer includes a first layer and a second layer. At least part of the first layer is interposed between the core particle and the second layer. The first layer includes a first solid electrolyte. The second layer includes a second solid electrolyte. The first solid electrolyte is a fluoride. The second solid electrolyte is a sulfide.

Abstract: A solid electrolyte material according to the present disclosure is represented by the chemical formula Li6-4aMaX6. M denotes at least one element selected from the group consisting of Zr, Hf, and Ti, X denotes at least one halogen element, and a is greater than 0 and less than 1.5.