Sulfide solid electrolyte particles
AssigneeIdemitsu Kosan Co., Ltd.
InventorsFutoshi UTSUNO, Toshiaki TSUNO, Kota TERAI, Hironari KIMPARA, Atsushi SATO
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Abstract
A sulfide solid electrolyte particles comprising lithium, phosphorus and sulfur, having a volume-based average particle size measured by laser diffraction particle size distribution measurement of 0.1 μm or more and 10 μm or less, having a diffraction peak having 2θ ranging from 29.0 to 31.0 deg in powder X-ray diffraction measurement using CuKα ray, and an intensity ratio (Ib/Ip) of a peak intensity Ip of the diffraction peak to a diffraction intensity Ib at a high angle-side low part of the diffraction peak is less than 0.09.
Claims21
Sulfide solid electrolyte particles, comprising lithium, phosphorus and sulfur,
- wherein
- a volume-based average particle size measured by laser diffraction particle size distribution measurement is 0.1 μm or more and 10 μm or less,
- in powder X-ray diffraction measurement using CuKα ray, the sulfide solid electrolyte particles have a diffraction peak having 2θ ranging from 29.0 to 31.0 deg, and
- an intensity ratio (Ib/Ip) of a peak intensity Ip of the diffraction peak to a diffraction intensity Ib at a high angle-side low part of the diffraction peak is less than 0.09.
Sulfide solid electrolyte particles, comprising lithium, phosphorus and sulfur,
- wherein
- a volume-based average particle size measured by laser diffraction particle size distribution measurement is 0.1 μm or more and 10 μm or less, and
- an ionic conductivity is 4.0 mS/cm or more.
A method for producing sulfide solid electrolyte particles comprising a crystal structure of a stable phase, the method comprising:
- particulating the sulfide solid electrolyte, followed by subjecting a particulated product to a heat treatment.
Dependencies are inferred from the claim text.