US 11,990,583 B2
Sulfide solid electrolyte and method of producing the same
Yuki Nakayama, Ageo (JP); Takahiro Ito, Ageo (JP); and Tsukasa Takahashi, Ageo (JP)
Assigned to Mitsui Mining & Smelting Co., Ltd., (JP)
Appl. No. 17/606,776
Filed by Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
PCT Filed Dec. 25, 2020, PCT No. PCT/JP2020/048632
§ 371(c)(1), (2) Date Oct. 27, 2021,
PCT Pub. No. WO2021/132537, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-239129 (JP), filed on Dec. 27, 2019.
Prior Publication US 2022/0263122 A1, Aug. 18, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 4/0407 (2013.01); H01M 4/364 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0068 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A sulfide solid electrolyte, comprising lithium (Li), phosphorus (P) and sulfur (S) elements, wherein the sulfide solid electrolyte has: a median diameter D50, which is a particle size at a cumulative volume of 50 vol % in a volume-based particle size distribution measured by a laser diffraction scattering particle size distribution measurement method, of 0.10 μm or more and 2.0 μm or less; a BET specific surface area of 2.0 m2/g or more and 20 m2/g or less; and a value of the formula: (A×B)/C, wherein A represents the BET specific surface area (m2/g), B re presents a true density (g/cm3), and C represents a CS value (m2/cm3), of 1.5 or more and 2.1 or less.