SULFIDE SOLID ELECTROLYTE MATERIAL, BATTERY, AND PRODUCING METHOD FOR SULFIDE SOLID ELECTROLYTE MATERIAL
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Abstract
A main object of the present invention is to provide a sulfide solid electrolyte material having favorable ion conductivity and low reduction potential. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material including an M1 element (such as a Li element), an M2 element (such as a Ge element, a Si element and a P element) and a S element, wherein the material has a peak at a position of 2θ=29.58°±0.50° in X-ray diffraction measurement using a CuKα line; and 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 IB/IA is less than 0.50, and M2 contains at least P and Si.
27 Citations
45 Claims
-
1-29. -29. (canceled)
-
30. A sulfide solid electrolyte material comprising an M1 element, an M2 element and a S element wherein
the M1 comprises at least Li; -
the M2 is P, Si and an element other than P and Si; the other element is at least one kind selected from the group consisting of Sb, Sn, B, Al, Ga, In, Ti, Zr, V and Nb; the sulfide solid electrolyte material has a peak at a position of 2θ
=20.18°
±
0.50°
, 20.44°
±
0.50°
, 26.96°
±
0.50° and
29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
line; andwhen 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 IB/IA is less than 0.50. - View Dependent Claims (32, 33, 34, 35, 42, 44)
-
-
31. A sulfide solid electrolyte material comprising an M1 element, an M2 element and a S element wherein
the M1 comprises at least Li; -
the M2 is P, Si and an element other than P and Si; the other element is at least one kind selected from the group consisting of Sb, Sn, B, Al, Ga, In, Ti, Zr, V and Nb; the sulfide solid electrolyte material has a peak at a position of 2θ
=20.18°
±
0.50°
, 20.44°
±
0.50°
, 26.96°
±
0.50° and
29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
line; andthe 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
line;
orwhen a diffraction intensity at the peak of 2θ
=29.58°
±
0.50°
is regarded as IA and a diffraction intensity at the peak of 2θ
=27.33°
±
0.50°
is regarded as IB in the case of having a peak at the position of 2θ
=27.33°
±
0.50°
, a value of IB/IA is less than 0.50.
-
-
36. A sulfide solid electrolyte material having an octahedron O composed of an M1 element and a S element, a tetrahedron T1 composed of an M2a element and a S element, and a tetrahedron T2 composed of an M2b element and a S element, and that the tetrahedron T1 and the octahedron O share an edge, the tetrahedron T2 and the octahedron O contain a crystal structure sharing a corner as a main body;
-
the M1 comprises at least Li; at least one of the M2a and the M2b comprises P; at least one of the M2a and the M2b comprises Si; at least one of the M2a and the M2b comprises an element other than P and Si; and the other element is at least one kind selected from the group consisting of Sb, Sn, B, Al, Ga, In, Ti, Zr, V and Nb. - View Dependent Claims (37, 38, 39, 40, 43, 45)
-
-
41. A sulfide solid electrolyte material wherein the sulfide solid electrolyte material is represented by Li(4-x)(Ge1-δ
- Siδ
)(1-x)Px(S1-yOy)4 (0<
x<
1, 0≦
y≦
0.25, 0.7≦
δ
<
1);the sulfide solid electrolyte material has a peak at a position of 2θ
=20.18°
±
0.50°
, 20.44°
±
0.50°
, 26.96°
±
0.50° and
29.58°
±
0.50°
in X-ray diffraction measurement using a CuKα
line; andwhen 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 IB/IA is less than 0.50.
- Siδ
Specification