Abstract: A solid electrolyte represented by the following formula (1): Li7?x+y(La3?yBay)(Zr2?xMx)O12(1), wherein 0.20?x<1.50, 0.00<y<0.30, and M is two or more elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7-x(La3-zYz)(Zr2-xMx)O12??(1) In the formula (1), x and z satisfy 0.00<x<1.10, and 0.00<z?0.15, and M is two or more types of elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1): Li7-x-yLa3(Zr2-x-yInxMy)O12??(1) wherein 0.00<x<0.20, 0.20?y<1.50, M is two or more elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7(La3-xBix)Zr2O12??(1) In the formula (1), x satisfies 0.05<x<0.40.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7?x+y(La3?ySry)(Zr2?xMx)O12??(1) In the formula (1), x and y satisfy 0.20?x<1.50 and 0.00<y<0.30, and M is two or more types of elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: A precursor solution according to the present disclosure contains: an organic solvent; a lithium oxoacid salt that exhibits a solubility in the organic solvent; and a base metal compound that exhibits a solubility in the organic solvent and that is at least one base metal selected from the group consisting of Nb, Ta, and Sb.

Abstract: A precursor solution according to the present disclosure contains an organic solvent, a lithium oxoacid salt that shows solubility in the organic solvent, and an aluminum compound that shows solubility in the organic solvent. When a ratio between a content of aluminum and a content of lithium in a case of satisfying a stoichiometric formulation of the following compositional formula (1) is set as a reference, the content of lithium in the precursor solution is preferably 1.00 times or more and 1.20 times or less with respect to the reference.

Abstract: A precursor composition for a solid electrolyte is provided that is capable of achieving a high lithium ion conductivity even if the precursor composition is sintered at a temperature of 1000° C. or lower. The precursor composition for the solid electrolyte is a precursor composition for a garnet-type or garnet-like solid electrolyte containing Li, La, Zr, and M, wherein the M is one or more types of elements selected from Nb, Ta, and Sb, the compositional ratio of Li:La:Zr:M in the solid electrolyte is 7-x:3:2-x:x, a relationship of 0<x<2.0 is satisfied, and the precursor composition exhibits X-ray diffraction intensity peaks at diffraction angles 2? of 28.4°, 32.88°, 47.2°, 56.01°, and 58.73° in an X-ray diffraction pattern.

Abstract: A precursor solution of a garnet-type solid electrolyte is provided that is represented by the following compositional formula, and contains one type of solvent, and a lithium compound, a lanthanum compound, a zirconium compound, a gallium compound, and a neodymium compound, each of which has solubility in the solvent, wherein with respect to the stoichiometric composition of the following compositional formula, the amount of the lithium compound is 1.05 times or more and 1.30 times or less, and the amounts of the lanthanum compound, the zirconium compound, the gallium compound, and the neodymium compound are equal, (Li7?3xGax) (La3?yNdy) Zr2O12 provided that the following relationships are satisfied: 0.1?x?1.0 and 0.0<y?0.2.

Abstract: A precursor solution of a garnet-type solid electrolyte is provided represented by the compositional formula: Li7?xLa3(Zr2?xMx)O12, wherein in the compositional formula, the element M is two or more types of elements selected from Nb, Ta, and Sb, and x satisfies 0.0<x<2.0, the precursor solution contains one type of solvent, and a lithium compound, a lanthanum compound, a zirconium compound, and a compound containing the element M, each of which has solubility in the solvent, and with respect to the stoichiometric composition of the compositional formula, the amount of the lithium compound is 1.05 times or more and 1.20 times or less, the amount of the lanthanum compound is equal, the amount of the zirconium compound is equal, and the amount of the compound containing the element M is equal.

Abstract: The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1): Li7-2x-yLa3(Zr2-xTexMy)O12??(1) wherein 0.30?x?0.80, 0.00?y 1.50, M is at least one element selected from the group consisting of Nb, Ta, and Sb.

Abstract: The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1): Li7?x+y(La3?yBay) (Zr2?xMx)O12 ??(1) wherein 0.20?x<1.50, 0.00<y<0.30, M is two or more elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1): Li7-x-yLa3(Zr2-x-yInxMy)O12??(1) wherein 0.00<x<0.20, 0.20?y<1.50, M is two or more elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1): Li7?yLa3 (Zr2?x?yGexMy) O12 ??(1) wherein 0.00<x?0.40, 0.00<y?1.50, M is Sb or is Sb and an element of at least one of Nb and Ta.

Abstract: A precursor solution of a negative electrode active material according to the present disclosure contains at least one kind of organic solvent, a lithium compound that exhibits solubility in the organic solvent, and a titanium compound that exhibits solubility in the organic solvent. The lithium compound is preferably a lithium metal salt compound. The titanium compound is preferably a titanium alkoxide.

Abstract: A method for producing a solid composition according to the present disclosure includes producing an oxide to be converted into a first functional ceramic by reacting with an oxoacid compound, and mixing the oxide, the oxoacid compound, and a second functional ceramic that is different from the first functional ceramic. The oxoacid compound preferably contains at least one of a nitrate ion and a sulfate ion as an oxoanion.

Abstract: A solid composition according to the present disclosure includes first particles constituted by a first solid electrolyte containing at least lithium, an oxide having a different formulation from the first solid electrolyte, and an oxoacid compound. It is preferred that the oxide and the oxoacid compound are contained in second particles that are different from the first particles. It is preferred that the oxoacid compound contains at least one of a nitrate ion and a sulfate ion as an oxoanion.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7-2x-zLa3(Zr2-x-zWxMz)O12??(1) In the formula (1), x and z satisfy 0.10?x?0.60 and 0.00<z?0.25, and M is at least one type of element selected from the group consisting of Nb, Ta, and Sb.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7-x(La3-zYz)(Zr2-xMx)O12??(1) In the formula (1), x and z satisfy 0.00<x<1.10, and 0.00<z?0.15, and M is two or more types of elements selected from the group consisting of Nb, Ta, and Sb.

Abstract: A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li7(La3-xBix)Zr2O12??(1) In the formula (1), x satisfies 0.05<x<0.40.