US 12,424,656 B2
Solid electrolyte, and electrode mixture, solid electrolyte layer and solid-state battery, each using same
Yuji Hoshi, Ageo (JP); Hideaki Matsushima, Ageo (JP); and Teruaki Yagi, Ageo (JP)
Assigned to MITSUI MINING & SMELTING CO., LTD., (JP)
Appl. No. 17/763,676
Filed by Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
PCT Filed Oct. 20, 2020, PCT No. PCT/JP2020/039369
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/085235, PCT Pub. Date May 6, 2021.
Claims priority of application No. 2019-196776 (JP), filed on Oct. 29, 2019.
Prior Publication US 2022/0344708 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0562 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 10/0525 (2013.01); H01M 2300/008 (2013.01)] 9 Claims
 
1. A solid electrolyte comprising:
a compound A that comprises a crystal phase having an argyrodite-type crystal structure and that is represented by LiaPSbXc, where X is at least one elemental halogen, a represents a number of 3.0 or more and 6.0 or less, b represents a number of 3.5 or more and 4.8 or less, and c represents a number of 0.1 or more and 3.0 or less; and
a compound B that is represented by LiX, where X is as defined above,
wherein the compound B has a crystallite size of 10 nm or more and 60 nm or less.