SULFIDE SOLID ELECTROLYTE MATERIAL, BATTERY, AND PRODUCING METHOD FOR SULFIDE SOLID ELECTROLYTE MATERIAL
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Abstract
The present invention aims to provide a sulfide solid electrolyte material with favorable ion conductivity, in which charge and discharge efficiency may be inhibited from decreasing. The object is attained by providing a sulfide solid electrolyte material, including: a Li element; a P element; and a S element, characterized in that the material has a peak at a position of 2θ=30.21°±0.50° in X-ray diffraction measurement using a CuKα ray, and the sulfide solid electrolyte material does not substantially include a metallic element belonging to the third group to the sixteenth group.
5 Citations
15 Claims
-
1-9. -9. (canceled)
-
10. A sulfide solid electrolyte material, comprising:
- a Li element;
a P element; and
a S element, characterized in thatthe sulfide solid electrolyte material has a peak at a position of 2θ
=17.69°
±
0.50°
, 20.60°
±
0.50°
, 24.60°
±
0.50°
, 27.62°
±
0.50° and
30.21°
±
0.50°
in X-ray diffraction measurement using a CuKα
ray,the sulfide solid electrolyte material does not substantially comprise a metallic element belonging to a third group to a sixteenth group, and the sulfide solid electrolyte material comprises a composition of Li5x+2y+3P1−
xS4 (0≦
x≦
0.2, 0<
y≦
0.3) or a composition of Li5x±
3P1−
xS4 (0.1≦
x≦
0.2). - View Dependent Claims (12, 14)
- a Li element;
-
11. A sulfide solid electrolyte material comprising:
- an octahedron O composed of a Li element and a S element;
a tetrahedron T1 composed of a P element and a S element; and
a tetrahedron T2 composed of a P element and a S element,characterized in that the tetrahedron T1 and the octahedron O share an edge, and the tetrahedron T2 and the octahedron O contain a crystal structure sharing a corner, the sulfide solid electrolyte material does not substantially comprise a metallic element belonging to a third group to a sixteenth group, and the sulfide solid electrolyte material comprises a composition of Li5x+2y+3P1−
xS4 (0≦
x≦
0.2, 0<
y≦
0.3) or a composition of Li5x+3P1−
xS4 (0.1≦
x≦
0.2). - View Dependent Claims (13, 15)
- an octahedron O composed of a Li element and a S element;
Specification