Abstract: A positive electrode material includes a positive electrode active material and a solid electrolyte. The oxidation potential of the solid electrolyte is higher than or equal to 3.9 V versus Li/Li+. The ratio of the volume of the solid electrolyte to the volume of the positive electrode material is in a range of greater than or equal to 8% and less than or equal to 25%. A battery of the present disclosure includes a positive electrode containing 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 includes a positive electrode active material, a solid electrolyte, and an organic solvent. The solid electrolyte contains Li, M, O, and X. M is at least one selected from the group consisting of Ta and Nb. X is at least one selected from the group consisting of F, Cl, Br, and I. The organic solvent has a boiling point of less than or equal to 212° C.

Abstract: A positive electrode material includes a coated active material including a positive electrode active material and a coating layer and a first solid electrolyte. The coating layer contains a second solid electrolyte and covers at least a portion of a surface of the positive electrode active material. The first solid electrolyte is represented by the following Formula (1): Li?1M1?1X1?1??Formula (1) where ?1, ?1, and ?1 each independently represent a positive real number; M1 includes calcium, yttrium, and at least one rare earth element other than yttrium; X1 includes at least one selected from the group consisting of F, Cl, Br, and I. The second solid electrolyte is softer than the first solid electrolyte.

Abstract: A method of manufacturing a solid-state battery, the method including: over-discharging the solid-state battery having a solid sulfide electrolyte layer.

Abstract: A battery includes a power generating element group including multiple laminated power generating elements each of which contains a solid electrolyte, and a first member in contact with a principal surface of a first power generating element that is one among the multiple power generating elements. The principal surface includes a central portion and an end portion with a ring-like shape surrounding the central portion in a plan view. The first member includes a central region overlapping with the central portion of the principal surface in a plan view, and an end region overlapping with the end portion of the principal surface in a plan view. At least one of the central region or the end region is in contact with the principal surface. A Young's modulus of the end region is smaller than that of the central region.

Abstract: A positive electrode material includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. The conductive material contains a first conductive material having an average major axis diameter of greater than or equal to 1 ?m and a second conductive material having an average particle diameter of less than or equal to 100 nm. A ratio of a volume of the positive electrode active material to a total volume of the positive electrode active material and the solid electrolyte is greater than or equal to 60% and less than or equal to 90%.

Abstract: A cathode includes a mixture of a cathode active material, a solid electrolyte, and a conductive material. The conductive material includes carbon black having an average particle size of less than or equal to 100 nm. When a cross-section of the cathode is observed using a scanning electron microscope, an area in which the carbon black is concentrated is found between the cathode active material and the solid electrolyte.

Abstract: A positive electrode material includes a positive electrode active material and a solid electrolyte. The oxidation potential of the solid electrolyte is higher than or equal to 3.9 V versus Li/Li+. The ratio of the volume of the solid electrolyte to the volume of the positive electrode material is in a range of greater than or equal to 8% and less than or equal to 25%. A battery of the present disclosure includes a positive electrode containing the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.

Abstract: The present disclosure provides a negative electrode material that can improve the charge-discharge efficiency of a battery. A negative electrode material includes a reduced form of a first solid electrolyte material and a conductive auxiliary. The first solid electrolyte material is denoted by Formula (1): Li60M?X?. Herein, in Formula (1), each of ?, ?, and ? is a value greater than 0, M represents at least one element selected from the group consisting of metal elements except Li and semimetals, and X represents at least one element selected from the group consisting of F, Cl, Br, and I.

Abstract: The positive electrode active material includes a complex oxide represented by Formula (1): LiNixMe1-xO2 where x satisfies 0.5?x<1, and Me is at least one selected from the group consisting of Co, Mn, Al, Mg, Ca, Sr, Ba, B, Ga, Y, Ce, Sm, Gd, Er, Ti, Zr, V, Nb, Ta, Sb, Bi, Cr, Mo, and W. In an X-ray diffraction pattern obtained by X-ray diffraction measurement of the positive electrode active material using Cu-K? rays, the ratio of the value of the full width at half maximum of a peak having the highest intensity within a diffraction angle 2? range of 40° or more and 50° or less to the value of the full width at half maximum of a peak corresponding to the (111) plane of a crystalline Si powder measured under the same conditions is less than or equal to 2.00.

Abstract: The present disclosure provides a negative electrode material that can improve the cycle characteristics of a battery. The negative electrode material according to the present disclosure contains a reduced form of a solid electrolyte material. The solid electrolyte material is denoted by Formula (1): Li?M?X?. Herein, in Formula (1), each of ?, ?, and ? is a value greater than 0, M represents at least one element selected from the group consisting of metal dements except Li and semimetals, and X represents at least one dement selected from the group consisting of F, Cl, Br, and I.

Abstract: A coated positive electrode active material according to one aspect of the present disclosure includes a positive electrode active material and a coating layer coating at least a portion of a surface of the positive electrode active material. A positive electrode material according to one aspect of the present disclosure includes the coated positive electrode active material and a first solid electrolyte. A battery according to one aspect of the present disclosure includes: a positive electrode including the positive electrode material; a negative electrode; and an electrolyte layer provided between the positive electrode and the negative electrode.

Abstract: The coated active material of the present disclosure includes an active material and a coating layer coating at least a part of the surface of the active material. The coated active material has a supernatant transmittance of greater than 64% and less than 93%. The supernatant transmittance is a transmittance of light with a wavelength of 550 nm measured for a supernatant liquid obtained by dispersing and precipitating the coated active material in a solvent. The supernatant liquid is placed in a quartz cell with a 10 mm optical path length and devoted to measurement of the transmittance.

Abstract: A positive electrode material includes a positive electrode active material, a coating layer, and a second solid electrolyte. The coating layer contains a first solid electrolyte and coats at least a portion of a surface of the positive electrode active material. The first solid electrolyte contains Li, M, and X, where M is at least one selected from the group consisting of metalloid elements and metal elements other than Li, and X is at least one selected from the group consisting of F, Cl, Br, and I. The second solid electrolyte is in indirect contact with the positive electrode active material with the coating layer disposed therebetween. A ratio of a volume of the first solid electrolyte to a total volume of the first solid electrolyte and the second solid electrolyte is greater than or equal to 4% and less than or equal to 60%.

Abstract: A coated active material of the present disclosure includes an active material and a coating layer coating at least a part of the surface of the active material. The coating layer includes a first coating material. The coated active material has a supernatant NV rate of less than 23%, where the supernatant NV rate is a ratio of the NV value of a supernatant liquid to the mass content ratio of the first coating material in a dispersing liquid obtained by dispersing the coated active material in a solvent, and the NV value of the supernatant liquid is a ratio of the mass of a non-volatile component to the mass of the supernatant liquid obtained by precipitating the coated active material by leaving the dispersing liquid to stand.

Abstract: A coated active material includes a positive electrode active material and a coating layer coating at least a portion of a surface of the positive electrode active material. The coating layer includes a first coating layer and a second coating layer. The first coating layer is located outside of the second coating layer. A percentage of change in specific surface area from a specific surface area of the positive electrode active material coated with the second coating layer to a specific surface area of the coated active material is greater than or equal to ?62.8% and less than or equal to +3.79%.

Abstract: A coated active material includes a positive electrode active material and a coating layer coating at least a portion of a surface of the positive electrode active material. The coating layer includes a first coating layer, which contains a first solid electrolyte, and a second coating layer, which contains a base material. The first coating layer is located outside of the second coating layer. The first solid electrolyte contains Li, M, and X, where M is at least one selected from the group consisting of metalloid elements and metal elements other than Li, and X is at least one selected from the group consisting of F, Cl, Br, and I. A ratio of a specific surface area of the coated active material to a specific surface area of the positive electrode active material coated with the second coating layer is less than or equal to 42%.

Abstract: A coated active material including: a positive electrode active material; a second coating layer; and a first coating layer outside the second coating layer, in which a percentage of change from S1 to S2 is ?78.0% or greater and ?15.0% or less and/or a percentage of change from S3 to S4 is ?77.0% or greater and ?12.0% or less, where S1 is a sum of dV/dD over a range of pore diameters of 2 nm to 100 nm of the active material coated with the second coating layer; S2 is a sum of dV/dD over a range of pore diameters of 2 nm to 100 nm of the coated active material; S3 is dV/dD at a pore diameter of 3 nm of the active material coated with the second coating layer; and S4 is dV/dD at a pore diameter of 3 nm of the coated active material.

Abstract: The coated active material of the present disclosure includes an active material and a coating layer coating at least a part of the surface of the active material. The coating layer includes a first coating material. When a coarse powder and a fine powder included in the powder of the coated active material are classified by airflow classification such that the mass ratio of the coarse powder and the fine powder is 9:1, the value of R2/R1 is less than 7.1, where R1 represents the mass content ratio of the first coating material in the coarse powder, and R2 represents the mass content ratio of the first coating material in the fine powder.

Abstract: A coated active material of the present disclosure includes an active material and a coating layer coating at least a part of the surface of the active material. The log differential pore volume of the coated active material at a pore diameter of 1.2 ?m is within a range of greater than or equal to 55 ?L/g and less than 152 ?L/g. The electrode material of the present disclosure includes a coating material and a solid electrolyte. A battery of the present disclosure includes a positive electrode including the electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.