Abstract: A solid electrolyte that includes a lithium ion conductive material having a garnet-type structure, a lithium ion conductive material having a LISICON-type structure, and a compound containing Li and B.

Abstract: A solid electrolyte material that includes a composite oxide containing Li and Bi, and at least one solid electrolyte having a garnet structure, a perovskite structure, and a LISICON structure.

Abstract: A solid-state battery including a solid-state battery laminate that includes at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer along a lamination direction, and defining: an overlapping part in which the positive electrode layer and the negative electrode layer overlap each other in the lamination direction, and a non-overlapping part in which the positive electrode layer and the negative electrode layer do not overlap each other in the lamination direction. At least one main surface having a normal in the lamination direction has a recess overlapping the overlapping part and defines a step between the overlapping part and the non-overlapping part or in the non-overlapping part.

Abstract: A solid-state battery including a positive electrode layer; a negative electrode layer; and a solid-state electrolyte layer between the positive electrode layer and the negative electrode layer, wherein the negative electrode layer includes: a negative electrode active material containing Li, M, and O, wherein M is one or more elements selected from the group consisting of W, Mo, Ta, and Zr, and a molar ratio (Li/M) of a Li content to a M content is more than 2.0; and a garnet-type solid-state electrolyte.

Abstract: A solid-state battery that includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer between the positive electrode layer and the negative electrode layer, in which the positive electrode layer contains a positive electrode active material and an oxide having a garnet-type crystal structure, and a first Li concentration in an interface vicinity with the positive electrode active material in the oxide is lower than a second Li concentration in a particle interior of the oxide.

Abstract: A solid electrolyte ceramic containing: at least lithium (Li), lanthanum (La), bismuth (Bi), and oxygen (O) and having a garnet-type crystal structure; and one or more transition metal elements selected from the group consisting of cobalt (Co), nickel (Ni), and manganese (Mn).

Abstract: A solid electrolyte ceramic having a garnet-type crystal structure, the solid electrolyte ceramic containing at least Li, La, and O; and one or more transition metal elements selected from the group consisting of Co, Ni, Mn, and Fe, in which a content X (mol %) of one or more elements D selected from the group consisting of a transition element capable of providing six-coordination with oxygen and an element belonging to Groups 12 to 15 and a total content Y (mol %) of the transition metal elements satisfy at least one of three specific relational expressions.

Abstract: A solid electrolyte ceramic that has a garnet-type crystal structure, and contains: at least Li, La, and O; and one or more transition metal elements selected from the group consisting of Co, Ni, Mn, and Fe, wherein, when a content of the Li and a total content of the one or more transition metal elements are denoted respectively by X (mol %) and Y (mol %), the solid electrolyte ceramic satisfies any one of the following relational expressions (1) to (3): (1) 0.01?Y?4.00 in the range of 221?X<227; (2) 0.01?Y?6.00 in the range of 227?X<237; and (3) 0.01?Y?8.00 in the range of 237?X?250.

Abstract: A solid electrolyte ceramic that has a garnet-type crystal structure, and contains: at least Li (lithium), La (lanthanum), and O (oxygen); and one or more transition metal elements selected from the group consisting of Co (cobalt), Ni (nickel), Mn (manganese), and Fe (iron), wherein, when a content of La and a total content of the one or more transition metal elements are denoted respectively by X (mol %) and Y (mol %), the solid electrolyte ceramic satisfies any one of the following relational expressions (1) to (3): (1) 0.01?Y?6.0 in the range of 147.5<X<150.0; (2) 0.01?Y?9.0 in the range of 145.0<X<147.5; and (3) 0.01?Y?12.0 in the range of 132.0?X?145.0.

Abstract: A solid electrolyte ceramic material that includes sintered solid electrolyte particles containing, at least, lithium (Li), lanthanum (La), bismuth (Bi), and oxygen (O), wherein the Bi is at a higher concentration in a vicinity of a grain boundary of the sintered solid electrolyte particles than in a grain interior of the sintered solid electrolyte particles.

Abstract: A solid-state battery that includes a positive electrode layer; a negative electrode layer; and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, wherein at least one electrode layer of the positive electrode layer and the negative electrode layer contains a conductive agent composed of a metal material, and the conductive agent is coated with a coating material having a melting point higher than that of the conductive agent.

Abstract: A solid-state battery that includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, where the negative electrode layer includes a conductive additive containing a metal material having an elongated shape in a section view at 7% to 28% in area ratio with respect to the negative electrode layer.

Abstract: A solid state battery that includes at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, wherein at least the solid electrolyte layer includes a plurality of solid electrolyte particles having a portion in which a constituent ratio of a transition metal element to all metal elements, excluding lithium, is 0.0% to 15%.

Abstract: A solid-state battery that includes a negative electrode layer and a solid electrolyte layer. The negative electrode layer contains a negative electrode active material in which a molar ratio of Li to vanadium (V) is 2.0 or more, the solid electrolyte layer contains a solid electrolyte having a lithium super ionic conductor (LISICON)-type structure and containing at least V, and the solid electrolyte contained in the solid electrolyte layer has an average chemical composition represented by (Li[3?ax+(5?b)(1?y)]Ax)(VyB1-y)O4.

Abstract: A solid-state battery including a positive electrode layer that includes a positive electrode active material having a layered rock salt-type structure and including a Li transition metal oxide containing at least one element selected from the group consisting of Co, Ni and Mn, and a solid electrolyte having a LISICON-type structure; and the positive electrode active material has an average particle size of 4 ?m or less.

Abstract: A solid-state battery including: a positive electrode layer; a negative electrode layer; and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer. The negative electrode layer contains a negative electrode active material in which a molar ratio of Li to V is 2.0 or more, the solid electrolyte layer contains a solid electrolyte having a lithium super ionic conductor structure and containing at least V, and a ratio y of V in the solid electrolyte changes by a change amount of 0.20 or more in a thickness direction of the solid electrolyte layer.

Abstract: A solid electrolyte having a garnet type crystal structure. The garnet type crystal structure contains Li, La, Zr, O and Ga and at least one element selected from Al, Mg, Zn and Sc.

Abstract: A nonpolar all-solid-state battery that includes a first electrode; a second electrode; and a solid electrolyte layer the first electrode and the second electrode. Each of the first electrode and the second electrode includes a first active material and at least one second active material. The first active material functions as both a positive electrode active material and a negative electrode active material. The first active material has a larger specific capacity when functioning as the positive electrode active material than when functioning as the negative electrode active material. In each of the first electrode and the second electrode, a ratio of the first active material to a total amount of the first and second active materials is more than 50% by mass and less than 100% by mass. A mass of each of the first and second active materials is equal between the first electrode and the second electrode.

Abstract: A co-fired all-solid-state battery that includes a negative electrode, a solid electrolyte layer, and a positive electrode. The negative electrode contains a negative electrode active material and a garnet-type solid electrolyte. The negative electrode active material contains Li, V, and O. The negative electrode active material has a mole ratio (Li/V) of a Li content to a V content of 2.0 or more. The garnet-type solid electrolyte contains Li, La, Zr, and O.

Abstract: A NaSICON-type solid-state electrolyte that contains Na as a conducting species, Zr, M, Si, P, and O, where M is at least one element selected from Mg, V, and Nb. The NaSICON-type solid-state electrolyte has a composition in which a molar ratio of M to Zr (M/Zr) is less than 0.2.