SULFIDE SOLID ELECTROLYTE MATERIAL, BATTERY, AND PRODUCING METHOD FOR SULFIDE SOLID ELECTROLYTE MATERIAL
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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.
26 Citations
31 Claims
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1-15. -15. (canceled)
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16. A sulfide solid electrolyte material comprising an M1 element, an M2 element and a S element,
wherein the M1 being at least one kind selected from the group consisting of Li, Na, K, Mg, Ca and Zn; - and the M2 being at least one kind selected from the group consisting of P, Sb, Si, Ge, Sn, B, Al, Ga, In, Ti, Zr, V and Nb, and having a peak at a position of 2θ
=29.58 °
±
0.50°
in X-ray diffraction measurement using a CuKα
ray, andwherein 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
the M2 contains at least P and Sn. - View Dependent Claims (18, 19, 20, 21, 22, 28, 30)
- and the M2 being at least one kind selected from the group consisting of P, Sb, Si, Ge, Sn, B, Al, Ga, In, Ti, Zr, V and Nb, and having a peak at a position of 2θ
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17. A sulfide solid electrolyte material comprising an M1 element, an M2 element and a S element,
wherein the M1 being at least one kind selected from the group consisting of Li, Na, K, Mg, Ca and Zn; - and the M2 being at least one kind selected from the group consisting of P, Sb, Si, Ge, Sn, B, Al, Ga, In, Ti, Zr, V and Nb, and having a peak at a position of 2θ
=29.58 °
±
0.50°
in X-ray diffraction measurement using a CuKα
ray, andnot having a peak at a position of 2θ
=27.33 °
±
0.50°
in X-ray diffraction measurement using a CuKα
ray, or wherein when 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; and
the M2 contains at least P and Sn.
- and the M2 being at least one kind selected from the group consisting of P, Sb, Si, Ge, Sn, B, Al, Ga, In, Ti, Zr, V and Nb, and having a peak at a position of 2θ
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23. A sulfide solid electrolyte material having an octahedron O composed of an M1 element and a S element, a tetrahedron T1 composed of an M2 element and a S element, and a tetrahedron T2 composed of an M2b element and a S element,
wherein 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 is at least one kind selected from the group consisting of Li, Na, K, Mg, Ca and Zn; the M2a and the M2b are each independently at least one kind selected from the group consisting of P, Sb, Si, Ge, Sn, B, Al, Ga, In, Ti, Zr, V and Nb; at least one of the M2a and the M2b contains P; and at least one of the M2a and the M2b contains Sn. - View Dependent Claims (24, 25, 26, 27, 29, 31)
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Specification