公开(公告)号：US20250002342A1

公开(公告)日：2025-01-02

申请号：US18576678

申请日：2022-07-05

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Sébastien Jus ,  Lauriane D'Alencon ,  Thierry Le Mercier

IPC: C01B17/22 ,  C01B25/14 ,  C01D15/02 ,  H01M10/0562

Abstract: The present disclosure relates to a process of obtaining a powder of lithium sulfide (Li2S powder) having a d50-value of less than 10 μm, a specific surface area of more than 5 m2/g, a total pore volume of more than 0.035 cm3/g and a percentage of total pore volume constituted of pore with diameter below 20 nm of more than 20%, comprising the steps of: a) providing a powder of lithium hydroxide having a d50-value of less than 10 μm and presenting a residual water content below 5 wt. % (LiOH powder A), and b) reacting such LiOH powder A with a sulfide reactant, in order to obtain the Li2S powder. The present disclosure also relates to the powder of lithium sulfide obtained from such process and the use of such Li2S powder to prepare a solid compound of formula (I): LiaPSbXc wherein —X represents at least one halogen element; —a represents a number from 3.0 to 6.0; —b represents a number from 3.5 to 5.0; and —c represents a number from 0 to 3.0.