Sulfide solid electrolyte material, battery, and producing method for sulfide solid electrolyte material

A sulfide solid electrolyte material having a peak at a position of 2θ=14.81°±1.00° and a peak at a position of 2θ=30.26°±1.00° in X-ray diffraction measurement using a CuKα ray, and having a composition of Li(3.14−x)Si(0.34−x)P(0.70+x)S(3.32−z)O(0.68+z), wherein −0.13≤x≤0.13, −0.11≤z≤0.11.

A sulfide solid electrolyte material having an octahedron O comprising a Li element and a S element, a tetrahedron T1 comprising at least one element of a P element and a Si element, and a S element, and a tetrahedron T2 comprising at least one element of a P element and a Si element, and a S element;

• the tetrahedron T1 and the octahedron O sharing an edge, and the tetrahedron T2 and the octahedron O containing a crystal structure sharing a corner,
• wherein at least one of the octahedron O, the tetrahedron T1 and the tetrahedron T2 is such that part of the S element is substituted with an O element, and
• the sulfide solid electrolyte material has a composition of Li(4−x−4y)Si(1−x+y)P(x)S(4−2a−z)O(2a+z), wherein a=1−x+y, 0.65≤x≤0.75, −0.025≤y≤0.1, −0.2≤z≤0.

A sulfide solid electrolyte material having an octahedron O comprising a Li element and a S element, a tetrahedron T1 comprising at least one element of a P element and a Si element, and a S element, and a tetrahedron T2 comprising at least one element of a P element and a Si element, and a S element;

• the tetrahedron T1 and the octahedron O sharing an edge, and the tetrahedron T2 and the octahedron O containing a crystal structure sharing a corner,
• wherein at least one of the octahedron O, the tetrahedron T1 and the tetrahedron T2 is such that part of the S element is substituted with an O element, and
• the sulfide solid electrolyte material has a composition of Li(3.14−x)Si(0.34−x)P(0.70+x)S(3.32−z)O(0.68+z), wherein −0.13≤x≤0.13, −0.11≤z≤0.11.