US 12,327,837 B2
Sulfide solid electrolyte
Tsukasa Takahashi, Ageo (JP); Takashi Chikumoto, Ageo (JP); and Yoichiro Ogata, Ageo (JP)
Assigned to MITSUI MINING & SMELTING CO., LTD., (JP)
Appl. No. 17/426,662
Filed by MITSUI MINING & SMELTING CO., LTD., Tokyo (JP)
PCT Filed Sep. 3, 2020, PCT No. PCT/JP2020/033441
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2021/049415, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-165781 (JP), filed on Sep. 11, 2019.
Prior Publication US 2022/0109183 A1, Apr. 7, 2022
Int. Cl. H01M 10/0525 (2010.01); C01B 25/14 (2006.01); H01M 4/62 (2006.01); H01M 10/0562 (2010.01)
CPC H01M 10/0562 (2013.01) [C01B 25/14 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); C01P 2002/30 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2006/40 (2013.01); H01M 2300/0068 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A sulfide solid electrolyte having: diffraction peak A observed within a range of 2θ=20.0° to 24.0°; and diffraction peak B observed within a range of 2θ=24.4° to 26.4°, diffraction peak A and diffraction peak B being observed by performing X-ray diffraction measurement using CuKα1 radiation,
a ratio of IA to IB, IA/IB, being 0.006 or more and 1.0 or less, wherein IA is an intensity of diffraction peak A and IB is an intensity of diffraction peak B,
the sulfide solid electrolyte comprising elemental lithium (Li), elemental phosphorus (P), elemental sulfur (S), an elemental halogen (X), and elemental oxygen (O), and
the sulfide solid electrolyte comprising a compound having a compositional formula LiaPSbXc, wherein a is from 3.0 to 6.5, b is from 3.5 to 5.5, and c is from 0.1 to 3.0.