Sulfide solid electrolyte material, battery, and producing method for sulfide solid electrolyte material
First Claim
1. A sulfide solid electrolyte material comprising:
- a composition of Li(4−
x)(M2′
(1−
δ
)Snδ
)(1−
x)PxS4, whereM2′
represents the element selected from the group consisting of Si, Ge, Ti, Zr, Nb and combinations thereof,0<
δ
≤
1, and0<
x<
1,whereinthe sulfide solid electrolyte material has a peak at a position of 2θ
=29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray;
the sulfide solid electrolyte material satisfies conditions (i) or (ii);
(i) the sulfide solid electrolyte material does not have a peak at a position of 2θ
=27.33°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray, or(ii) when a diffraction intensity at the peak of 2θ
=29.58°
±
0.50°
is regarded as IA and a diffraction intensity at a peak of 2θ
=27.33°
±
0.50°
is regarded as IB, a value of IBIA is less than 0.50 but not 0.
1 Assignment
0 Petitions
Accused Products
Abstract
The main object of the present invention is to provide a sulfide solid electrolyte material having favorable ion conductivity and high stability against moisture. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material comprising an M1 element (such as Li element), an M2 element (such as Ge element, Sn element and P element) and a S element, and having a peak at a position of 2θ=29.58°±0.50° in X-ray diffraction measurement using a CuKα ray, characterized in that when a diffraction intensity at the above-mentioned peak of 2θ=29.58°±0.50° is regarded as IA and a diffraction intensity at a peak of 2θ=27.33°±0.50° is regarded as IB, a value of IB/IA is less than 0.50, and the M2 contains at least P and Sn.
-
Citations
17 Claims
-
1. A sulfide solid electrolyte material comprising:
-
a composition of Li(4−
x)(M2′
(1−
δ
)Snδ
)(1−
x)PxS4, whereM2′
represents the element selected from the group consisting of Si, Ge, Ti, Zr, Nb and combinations thereof,0<
δ
≤
1, and0<
x<
1,wherein the sulfide solid electrolyte material has a peak at a position of 2θ
=29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray;the sulfide solid electrolyte material satisfies conditions (i) or (ii); (i) the sulfide solid electrolyte material does not have a peak at a position of 2θ
=27.33°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray, or(ii) when a diffraction intensity at the peak of 2θ
=29.58°
±
0.50°
is regarded as IA and a diffraction intensity at a peak of 2θ
=27.33°
±
0.50°
is regarded as IB, a value of IBIA is less than 0.50 but not 0. - View Dependent Claims (2, 3, 4, 5, 6, 11, 13, 15, 16, 17)
-
-
7. A sulfide solid electrolyte material comprising a crystal structure as a main body, the crystal structure includes:
-
an octahedron O composed of Li and S; a tetrahedron T1 composed of an M2′
element, and, the tetrahedron T1 and the octahedron O sharing an edge; anda tetrahedron T2 composed of an M2′
element and, the tetrahedron T2 and the octahedron O sharing a corner;P is present in at least one of tetrahedron T1 and tetrahedron T2, and Sn is present in at least one of tetrahedron T1 and tetrahedron T2; wherein the sulfide solid electrolyte material has a composition of Li(4−
x)(M2′
(1−
δ
)Snδ
)(1−
x) PxS4, whereM2′
represents the element selected from the group consisting of Si, Ge, Ti, Zr, Nb and combinations thereof, and may be the same or different in tetrahedron T1 and tetrahedron T2,0<
δ
≤
1, and0<
x<
1. - View Dependent Claims (8, 9, 10, 12, 14)
-
Specification