SULFIDE SOLID ELECTROLYTE - TOKYO INST TECH

Title:

SULFIDE SOLID ELECTROLYTE

Document Type and Number:

WIPO Patent Application WO/2017/155119

Kind Code:

A1

Abstract:

Provided is a sulfide solid electrolyte material that does not contain Ge, and is provided with both excellent electrochemical stability and high lithium ion conductivity. The sulfide solid electrolyte contains a sulfide-based solid electrolyte represented by compositional formula Li4–4z–x[SnySi1–y]1+z–xPxS4, where 0.5 ≤ x ≤ 0.6, y = 0.2, and 0 ≥ z ≥ –0.2, and has a peak at a position 2θ = 29.58°±0.50° with X-ray diffraction measurement using CuKα rays, and does not have a peak at a position 2θ = 27.33°±0.50° with X-ray diffraction measurement using CuKα rays, or, in a case having a peak at the abovementioned position 2θ = 27.33°±0.50°, when the diffracted intensity of the peak of the abovementioned 2θ = 29.58°±0.50° is IA, and the diffracted intensity of the peak of the abovementioned 2θ = 27.33°±0.50° is IB, the value of IB/IA is less than 0.50.

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Inventors:

KANNO RYOJI (JP)
HIRAYAMA MASAAKI (JP)
SUZUKI KOTA (JP)
SUN YULONG (JP)

Application Number:

PCT/JP2017/009824

Publication Date:

September 14, 2017

Filing Date:

March 10, 2017

Export Citation:

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Assignee:

TOKYO INST TECH (JP)

International Classes:

H01M10/0562; C01B33/06; C04B35/547; H01B1/06; H01M10/052

Domestic Patent References:

WO2013118722A1

2013-08-15

Foreign References:

JP2013177288A

2013-09-09

Other References: