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|1. (WO2018164224) SULFIDE SOLID ELECTROLYTE PARTICLE|
|Applicants:||IDEMITSU KOSAN CO.,LTD.
|Title:||SULFIDE SOLID ELECTROLYTE PARTICLE|
Provided is a sulfide solid electrolyte particle containing lithium, phosphorus, and sulfur, wherein the volume-based average particle diameter as measured by a laser diffraction-type particle size distribution measurement is 0.1-10 μm, and in a diffraction pattern obtained from a powder X-ray diffraction measurement using CuKα radiation, a diffraction peak is present in the 2θ range of 29.0 to 31.0 degrees, and the intensity ratio of the diffraction intensity Ib at a high angle-side lower part of the diffraction peak to the peak intensity Ip of the diffraction peak, i.e. Ib/Ip, is less than 0.09.