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: An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO42?) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.

Abstract: A method for producing a solid composition according to the present disclosure is a method for producing a solid composition that is used for forming a functional ceramic having a first crystal phase. The method for producing a solid composition includes: producing an oxide composed of a second crystal phase different from the first crystal phase; and mixing the oxide and an oxo acid compound.

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 solid composition according to the present disclosure is a solid composition to be used for forming a functional ceramic having a crystal phase, and contains an oxide constituted by a crystal phase different from the crystal phase of the functional ceramic at normal temperature and normal pressure, and an oxoacid compound. The oxoacid compound preferably contains at least one of a nitrate ion and a sulfate ion as an oxoanion. Further, the oxide preferably has a crystal grain size of 10 nm or more and 200 nm or less.

Abstract: A stacked solid-state battery according to the present disclosure has a configuration in which a plurality of cells, each including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer provided between the positive electrode layer and the negative electrode layer, are stacked such that the positive electrode layers or the negative electrode layers of adjacent cells are disposed to face each other and, contains a first solid electrolyte represented by the following composition formula (1). Li7-x-yLa3Zr2-x-ySbxTayO12??(1) (In the formula (1), 0.01?x?1.99, 0.01?y?1.99, and 0.02?x+y?2.00.

Abstract: A stacked solid-state battery according to the present disclosure has a structure in which a plurality of cells, each including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer provided between the positive electrode layer and the negative electrode layer, are stacked such that the positive electrode layers or the negative electrode layers of adjacent cells are disposed to face each other and, contains a first solid electrolyte represented by the following composition formula (1). Li7-3xM1xLa3-3yM2yZr2O12??(1) (In the formula (1), 0.010?x?2.00, 0.010?y?1.00, M1 is at least one element selected from the group consisting of Al, Ga, and In, and M2 is at least one element selected from the group consisting of Ce and Nd).

Abstract: A stacked solid-state battery according to the present disclosure has a configuration in which a plurality of cells, each including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer provided between the positive electrode layer and the negative electrode layer, are stacked such that the positive electrode layers or the negative electrode layers of adjacent cells are disposed to face each other and, contains a first solid electrolyte represented by the following composition formula (1). (Li7-3xGax)(La3-yNdy)Zr2O12??(1) (In the formula (1), 0.1?x?1.0 and 0.01?y?0.20.

Abstract: A stacked solid-state battery according to the present disclosure has a configuration in which a plurality of cells, each including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer provided between the positive electrode layer and the negative electrode layer, are stacked such that the positive electrode layers or the negative electrode layers of adjacent cells are disposed to face each other, contains a first solid electrolyte represented by the following composition formula (1). Li7-x-yLa3Zr2-x-yM1xM2yO12??(1) (In the Formula (1), 0.010?x?2.00, 0.010?y?1.50, M1 is one element selected from the group consisting of Nb, Sb, Ta, and W and having the highest content in the first solid electrolyte, and M2 is at least one element selected from the group consisting of Nb, Sb, Ta, and W, and is an element other than M1.

Abstract: A composition for forming a lithium reduction resistant layer includes a solvent, and a lithium compound, a lanthanum compound, a zirconium compound, and a compound containing a metal M, each of which shows solubility in the solvent, and in which with respect to the stoichiometric composition of a compound represented by the general formula (I), the lithium compound is contained in an amount 1.05 times or more and 2.50 times or less, the lanthanum compound and the zirconium compound are contained in an amount 0.70 times or more and 1.00 times or less, and the compound containing a metal M is contained in an equal amount.

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: A secondary battery according to the present disclosure includes a solid electrolyte portion containing a lithium composite metal oxide represented by the following compositional formula (1), and current collectors disposed opposite to each other through the solid electrolyte portion: Li7?xLa3Zr2?(x+y)MaxMbyO12??(1) provided that 0.5<x+y<1.2 and (ix+jy)+4(x+y)>8 wherein i is an oxidation number of Ma and j is an oxidation number of Mb are satisfied, and Ma represents one or more types of Sb, Bi, Ce, Mn, V, Te, Tc, and Sn, and Mb represents one or more types of Nb, Cr, Mo, W, Ta, and Ti.

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?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: 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.