Abstract: The solid electrolyte material of the present disclosure is a solid electrolyte material including Li, Y, and I, wherein in an X-ray diffraction pattern of the solid electrolyte material obtained by X-ray diffraction measurement using Cu-K? rays, the peak having the highest intensity among the peaks present in a diffraction angle 2? range of greater than or equal to 25.0° and less than or equal to 29.1° has a half value width of less than 0.89°. The battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.

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: 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 of the present disclosure contains Li, Yb, M, and X. M is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Zn, Y, Tb, Gd, Sm, In, Zr, and Hf. X is at least one selected from the group consisting of F, Cl, Br, and I. A battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.

Abstract: A solid electrolyte material of the present disclosure contains Li, Yb, and X. X is at least two selected from the group consisting of F, Cl, Br, and I. A battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer contains the solid electrolyte material of the present disclosure.

Abstract: A solid electrolyte material of the present disclosure consists of Li, M1, M2, and X. The M1 is one selected from the group consisting of Mg, Ca, Sr, Ba, and Zn. The M2 is at least one selected from the group consisting of Gd and Sm. The X is at least one selected from the group consisting of F, Cl, Br, and I. A battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material of the present disclosure.

Abstract: A solid electrolyte material of the present disclosure includes Li, M1, M2, and X. The M1 is at least one element selected from the group consisting of a group 2 element and a group 12 element. The M2 is at least three elements selected from the group consisting of a rare-earth element and a group 13 element. The X is at least one selected from the group consisting of F, Cl, Br, and I. A battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material of the present disclosure.

Abstract: A solid electrolyte material according to the present disclosure includes Li, DC, Y, Sm, and X. The DC is at least one selected from the group consisting of Mg, Ca, Sr, Ba, and Zn. The X is at least one selected from the group consisting of F, Cl, Br, and I. A battery according to the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. At least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material according to the present disclosure.

Abstract: A production method for producing a halide, the method includes a heat treatment step of heat-treating a mixed material containing (NH4)aY?3+a, (NH4)bSm?3+b, Li?, and Ca?2 in an inert gas atmosphere, wherein ?, ?, ?, and ? are each independently at least one selected from the group consisting of F, Cl, Br, and I, and the following three formulas: 0?a?3, 0?b?3, and 0<a+b?6, are satisfied.

Abstract: The production method of the present disclosure includes heat-treating a material mixture containing a compound containing Y, a compound containing Sm, NH4?, Li?, and Ca?2 in an inert gas atmosphere. The compound containing Y is at least one selected from the group consisting of Y2O3 and Y?3, and the compound containing Sm is at least one selected from the group consisting of Sm2O3 and Sm?3. The material mixture contains at least one selected from the group consisting of Y2O3 and Sm2O3, and ?, ?, ?, ?, and ? are each independently at least one selected from the group consisting of F, Cl, Br, and I.

Abstract: A solid electrolyte material includes Li, Ca, Y, Gd, and X wherein X is at least one element selected from the group consisting of F, Cl, Br, and I. A battery uses the solid electrolyte material.