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

  • US 10,388,985 B2
  • Filed: 02/05/2013
  • Issued: 08/20/2019
  • Est. Priority Date: 02/06/2012
  • Status: Active Grant
First Claim
Patent Images

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.

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